What is the best design pattern for multiple instruments?

I have several PXI cards (DMM, O-scope, etc) that I want to create a master panel that can control all of the instruments individually, though not necessarily all at the same time (turn "instruments" on and off at will while the master vi continues to run). Is there one design pattern (master/slave, producer/consumer, etc.) that works better than another for this type of master panel? Are there other alternatives for this type of problem (VI Server, etc)?
I was hoping that I could save a bunch of time if I could start on the right path right off the bat!
Thanks,
-Warren

elrathia wrote:
Hi Ben,
I haven't much idea of how override works and when you would use it and why. I'm the newest of the new here.
Good. At least you will not be smaking with a OPPer dOOPer hammer if I make some gramatical mistake.
You may want to look at this thread in the BreakPoint where i trie to help Cory get a handle on Dynamic Dispatching with an example of two classes that inherit from a common parent and invoke Over-ride VIs to do the same thing but with wildly varying results.
The example uses a Class of "Numeric" and a sibling class "Text" and the both implement an Add method.
It is dirt simple and Cory did a decent job of explaining it.
It just be the motivation you are looking for.
have fun!
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Similar Messages

What is the best design pattern for top-down ws development..?

Hi,
What is the best design pattern for top-down development+ wsdl2service....?

elrathia wrote:
Hi Ben,
I haven't much idea of how override works and when you would use it and why. I'm the newest of the new here.
Good. At least you will not be smaking with a OPPer dOOPer hammer if I make some gramatical mistake.
You may want to look at this thread in the BreakPoint where i trie to help Cory get a handle on Dynamic Dispatching with an example of two classes that inherit from a common parent and invoke Over-ride VIs to do the same thing but with wildly varying results.
The example uses a Class of "Numeric" and a sibling class "Text" and the both implement an Add method.
It is dirt simple and Cory did a decent job of explaining it.
It just be the motivation you are looking for.
have fun!
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

What is the best design pattern for this problem?

No code to go with the question. I am trying to settle on the best design pattern for the problem before I code. I want to use an Object Oriented approach.
I have included a basic UML diagram of what I was thinking so far.
Stated simply, I have three devices; Module, Wired Modem, and Wireless Modem.
In the Device Under Test parent class, I have put the attributes that are variable from device to device, but common to all of them.
In the child classes, I have put the attributes that are not variable to each copy of that device. The attributes are common across device types. I was planning to use controls in the class definition that have the data set to a default value, since it doesn't change for each serial number of that device. For example, a Module will always have a Device Type ID of 1. These values are used to query the database.
An example query would be [DHR].[GetDeviceActiveVersions] '39288', 1, '4/26/2012 12:18:52 PM'
The '1' is the device type ID, the 39288 is the serial number, and the return would be "A000" or "S002", for example.
So, I would be pulling the Serial Number and Device Type ID from the Device Under Test parent and child, and passing them to the Database using a SQL string stored in the control of the Active Versions child class of Database.
The overall idea is that the same data is used to send multiple queries to the database and receiving back various data that I then evaluate for pass of fail, and for date order.
What I can't settle on is the approach. Should it be a Strategy pattern, A Chain of Command pattern, a Decorator pattern or something else.
Ideas?

elrathia wrote:
Hi Ben,
I haven't much idea of how override works and when you would use it and why. I'm the newest of the new here.
Good. At least you will not be smaking with a OPPer dOOPer hammer if I make some gramatical mistake.
You may want to look at this thread in the BreakPoint where i trie to help Cory get a handle on Dynamic Dispatching with an example of two classes that inherit from a common parent and invoke Over-ride VIs to do the same thing but with wildly varying results.
The example uses a Class of "Numeric" and a sibling class "Text" and the both implement an Add method.
It is dirt simple and Cory did a decent job of explaining it.
It just be the motivation you are looking for.
have fun!
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

What are the best design requisites for a Query design?

Hi Guru's
Could you please let me know,which item will execute first when you run a query,I mean Calculated keyfigure,restricted keyfigure or formula e,t,c...How does it effects the Query performance?What are the design requisites to optimise better query performance?
Thanks in advance,
rgds,
Srini.

Hi Srinivas....
The design of queries can have a significant impact on the performance.
Sometimes long running queries are the result of poor design, not just the amount
of data. There are a number of design techniques that developers can use to
provide optimal query performance.
For example, in most cases characteristics should be placed in the rows and key
figures in the columns. A characteristic should only be used in the columns in
certain circumstances (like time). Characteristics having potentially many values
(such as 0MATERIAL) must not be added to the columns without a filter or
variables. Alternatively, it can be integrated into the query as a free characteristic
enabling it to be used in navigation.
If a relatively detailed time characteristic, such as calendar day (0CALDAY) is
added to the rows, the more aggregated time characteristics (such as calendar
month (0CALMONTH)) and calendar year (0CALYEAR) should also be included
in the free characteristics of the query. For most reports, a current period of time
(current month, previous or current calendar year) is useful. For this reason, the
use of variables is particularly relevant for time characteristics.
To improve query performance
1) Variables and drop down lists can improve query performance by making the
data request more specific. This is very important for queries against Data Store
Objects and InfoSets, which are not aggregated like InfoCubes.
2) When using restricted key figures, filters or selections, try to avoid the Exclusion
option if possible. Only characteristics in the inclusion can use database indexes.
Characteristics in the exclusion cannot use indexes.
3) When a query is run against a MultiProvider, all of InfoProviders in that
MultiProvider are read. The selection of the InfoProviders in a MultiProvider
query can be controlled by restricting the virtual characteristic 0INFOPROVIDER
to only read the InfoProviders that are needed. In this way, there will be no
unnecessary database reads.
4) Defining calculated key figures at the InfoProvider level instead
of the query level will improve query runtime performance, but may add
time for data loads.
5) Cell calculation by means of the cell editor generates separate queries at query
runtime. Be cautious with cell calculations.
6) Customer-specific code is necessary for virtual key figures and characteristics.
Check Code in Customer Exits.
7)Using graphics in queries, such as charts, can have a performance impact.
Hope this helps.........
Regards,
Debjani.........

What is the best Mac app for designing custom brochures and business cards?

What is the best Mac app for designing custom brochures and business cards? And Why? I like to use my creativity. I have Print Shop2 right now, less formatted templates and more options would be better. Any suggestions. Tell me why you like it. My background is MS windows XP Publisher 2003. Thank you for your help!
Nightowl7

What is the best Mac app for designing custom brochures and business cards? And Why? I like to use my creativity. I have Print Shop2 right now, less formatted templates and more options would be better. Any suggestions. Tell me why you like it. My background is MS windows XP Publisher 2003. Thank you for your help!
Nightowl7

What is the best free app for graphic design for mac

what is the best free app for graphic design for mac

Good place to look for software:
http://www.macupdate.com/
And for free alternatives to some popular software packages:
http://alternativeto.net/
(If you see an ad there for something called MacKeeper, ignore it and on no account install it - it is malware.)
And there is of course also the App Store!

What is the best way to sync multiple collections of contacts among multiple users?

(I originally submitted this question under the "Mac OS X Technologies" section, but got no response. I'm submitting a duplicate here because this is where all the smart folks are! My apologies that my question is only partially related to OS X Server . . . )
What is the best way to sync multiple collections of contacts among multiple users on iOS and OS X?
For example, suppose I have three collections of contacts: Bob's, Sally's, and Common. I want Bob to be able to access and sync Bob's contacts and Common contacts, and Sally to access and sync Sally's contacts and Common contacts. Bob and Sally never need to access or sync each other's contacts. Bob and Sally would both sync and share contacts in Common.
How would I best implement this? It's my understanding I have three options for managing contacts across iOS and OS X: 1. iCloud accounts, 2. Install OS X server, or 3. Install and manage Darwin CardDAV directly. Which method would best support what I wish to do?
I am a seasoned Unix geek well versed in the terminal, so I am prepared to get my hands dirty as much as necessary to achieve what I want. Also, it is sufficient if syncing takes place over WiFi on the local network, in fact, that is desirable versus syncing over the cloud.

Thanks for your reply Nick101. I see my example was oversimplified. When I say "multiple groups of contacts over multiple users" I'm really referring to N groups of contacts over N users.
So I need to add Fred, who can access and sync Bob's contacts, Sally's contacts, and Common contacts, as well as Fred's contacts. Can I do it with OS X server?
You mention you keep your and your partner's contacts administered locally. What keeps you from administering them through OS X server as well?
I am guessing this can all somehow be accomplished with multiple contact accounts, but I can't find any information on the web explicitly describing this.

What is the best video converter for DVD to iMovie? Either free or to purchase.

What is the best video converter for DVD to iMovie? Either free or to purchase. And one that is 'fool-proof' and very easy to use. Many thanks, anyone who can advise.

You want to 'reverse engineer' the compressed mpeg2 DVD file back to something iMovie can use?
You need to convert the VOB files in the TS-Folder of the DVD back to DV which iMovie is designed to handle. For that you need mpegStreamclip:
http://www.squared5.com/svideo/mpeg-streamclip-mac.html
which is free, but you must also have the Apple mpeg2 plugin :
http://www.apple.com/quicktime/mpeg2/
(unless you are running Lion in which case see below))
which is a mere $20.
Another possibility is to use DVDxDV:
http://www.dvdxdv.com/NewFolderLookSite/Products/DVDxDV.overview.htm
which costs $25.
For the benefit of others who may read this thread:
Obviously the foregoing only applies to DVDs you have made yourself, or other home-made DVDs that have been given to you. It will NOT work on copy-protected commercial DVDs, which in any case would be illegal.
And from the TOU of these forums:
Keep within the Law
No material may be submitted that is intended to promote or commit an illegal act.
Do not submit software or descriptions of processes that break or otherwise ‘work around’ digital rights management software or hardware. This includes conversations about ‘ripping’ DVDs or working around FairPlay software used on the iTunes Store.
If you are running Lion:
From the MPEG Streamclip homepage
The installer of the MPEG-2 Playback Component may refuse to install the component in Lion. Apple states the component is unnecessary in Lion, however MPEG Streamclip still needs it.
To install the component in Lion, please download MPEG Streamclip 1.9.3b7 beta above; inside the disk image you will find the Utility MPEG2 Component Lion: use it to install the MPEG-2 Playback Component in Lion. The original installer's disk image (QuickTimeMPEG2.dmg) is required.
The current versions of MPEG Streamclip cannot take advantage of the built-in MPEG-2 functionality of Lion. For MPEG-2 files you still need to install the QuickTime MPEG-2 Playback Component, which is not preinstalled in Lion. You don't have to install QuickTime 7.

What is the best virus protection for a Mac?

What is the best virus protection for a Mac?

1. This comment applies to malicious software ("malware") that's installed unwittingly by the victim of a network attack. It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to the victim's computer. That threat is in a different category, and there's no easy way to defend against it. If you have reason to suspect that you're the target of such an attack, you need expert help.
OS X now implements three layers of built-in protection specifically against malware, not counting runtime protections such as execute disable, sandboxing, system library randomization, and address space layout randomization that may also guard against other kinds of exploits.
2. All versions of OS X since 10.6.7 have been able to detect known Mac malware in downloaded files, and to block insecure web plugins. This feature is transparent to the user, but internally Apple calls it "XProtect." The malware recognition database is automatically checked for updates once a day; however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders.
The following caveats apply to XProtect:
It can be bypassed by some third-party networking software, such as BitTorrent clients and Java applets.
It only applies to software downloaded from the network. Software installed from a CD or other media is not checked.
3. Starting with OS X 10.7.5, there has been a second layer of built-in malware protection, designated "Gatekeeper" by Apple. By default, applications and Installer packages downloaded from the network will only run if they're digitally signed by a developer with a certificate issued by Apple. Software certified in this way hasn't actually been tested by Apple (unless it comes from the Mac App Store), but you can be reasonably sure that it hasn't been modified by anyone other than the developer. His identity is known to Apple, so he could be held legally responsible if he distributed malware. For most practical purposes, applications recognized by Gatekeeper as signed can be considered safe.
Gatekeeper doesn't depend on a database of known malware. It has, however, the same limitations as XProtect, and in addition the following:
It can easily be disabled or overridden by the user.
A malware attacker could get control of a code-signing certificate under false pretenses, or could find some other way to evade Apple's controls.
4. Starting with OS X 10.8.3, a third layer of protection has been added: a "Malware Removal Tool" (MRT). MRT runs automatically in the background when you update the OS. It checks for, and removes, malware that may have evaded the other protections via a Java exploit (see below.) MRT also runs when you install or update the Apple-supplied Java runtime (but not the Oracle runtime.) Like XProtect, MRT is presumably effective against known attacks, but maybe not against unknown attacks. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
5. Beyond XProtect, Gatekeeper, and MRT, there’s no evidence of any benefit from other automated protection against malware. The first and best line of defense is always your own intelligence. With the possible exception of Java exploits, all known malware circulating on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of so-called "trojan horses," which can only have an effect if the victim is duped into running them. The threat therefore amounts to a battle of wits between you and the malware attacker. If you're smarter than he thinks you are, you'll win.
That means, in practice, that you never use software that comes from an untrustworthy source. How do you know whether a source is trustworthy?
Any website that prompts you to install a “codec,” “plug-in,” "player," "extractor," or “certificate” that comes from that same site, or an unknown one, is untrustworthy.
A web operator who tells you that you have a “virus,” or that anything else is wrong with your computer, or that you have won a prize in a contest you never entered, is trying to commit a crime with you as the victim. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
Pirated copies or "cracks" of commercial software, no matter where they come from, are unsafe.
Software of any kind downloaded from a BitTorrent or from a Usenet binary newsgroup is unsafe.
Software with a corporate brand, such as Adobe Flash Player, must be downloaded directly from the developer’s website. If it comes from any other source, it's unsafe.
6. Java on the Web (not to be confused with JavaScript, to which it's not related, despite the similarity of the names) is a weak point in the security of any system. Java is, among other things, a platform for running complex applications in a web page, on the client. That was always a bad idea, and Java's developers have proven themselves incapable of implementing it without also creating a portal for malware to enter. Past Java exploits are the closest thing there has ever been to a Windows-style "virus" affecting OS X. Merely loading a page with malicious Java content could be harmful. Fortunately, Java on the Web is mostly extinct. Only a few outmoded sites still use it. Try to hasten the process of extinction by avoiding those sites, if you have a choice. Forget about playing games or other non-essential uses of Java.
Java is not included in OS X 10.7 and later. Discrete Java installers are distributed by Apple and by Oracle (the developer of Java.) Don't use either one unless you need it. Most people don't. If Java is installed, disable it — not JavaScript — in your browsers. In Safari, this is done by unchecking the box marked Enable Java in the Security tab of the preferences dialog.
Regardless of version, experience has shown that Java on the Web can't be trusted. If you must use a Java applet for a specific task, enable Java only when needed for the task and disable it immediately when done. Close all other browser windows and tabs, and don't visit any other sites while Java is active. Never enable Java on a public web page that carries third-party advertising. Use it, when necessary, only on well-known, login-protected, secure websites without ads. In Safari 6 or later, you'll see a lock icon in the address bar with the abbreviation "https" when visiting a secure site.
Follow the above guidelines, and you’ll be as safe from malware as you can practically be. The rest of this comment concerns what you should not do to protect yourself from malware.
7. Never install any commercial "anti-virus" or "Internet security" products for the Mac, as they all do more harm than good, if they do any good at all. If you need to be able to detect Windows malware in your files, use the free software ClamXav — nothing else.
Why shouldn't you use commercial "anti-virus" products?
Their design is predicated on the nonexistent threat that malware may be injected at any time, anywhere in the file system. Malware is downloaded from the network; it doesn't materialize from nowhere.
In order to meet that nonexistent threat, the software modifies or duplicates low-level functions of the operating system, which is a waste of resources and a common cause of instability, bugs, and poor performance.
By modifying the operating system, the software itself may create weaknesses that could be exploited by malware attackers.
8. ClamXav doesn't have these drawbacks. That doesn't mean it's entirely safe. It may report email messages that have "phishing" links in the body, or Windows malware in attachments, as infected files, and offer to delete or move them. Doing so will corrupt the Mail database. The messages should be deleted from within the Mail application.
ClamXav is not needed, and should not be relied upon, for protection against OS X malware. It's useful only for detecting Windows malware. Windows malware can't harm you directly (unless, of course, you use Windows.) Just don't pass it on to anyone else.
A Windows malware attachment in email is usually easy to recognize. The file name will often be targeted at people who aren't very bright; for example:
♥♥♥♥♥♥♥♥♥♥♥♥♥♥!!!!!!!H0TBABEZ4U!!!!!!!.AVI♥♥♥♥♥♥♥♥♥♥♥♥♥♥.exe
ClamXav may be able to tell you which particular virus or trojan it is, but do you care? In practice, there's seldom a reason to use ClamXav unless a network administrator requires you to run an anti-virus application.
9. The greatest harm done by security software, in my opinion, is in its effect on human behavior. It does little or nothing to protect people from emerging threats, but they get a false sense of security from it, and then they may behave in ways that expose them to higher risk. Nothing can lessen the need for safe computing practices.
10. It seems to be a common belief that the built-in Application Firewall acts as a barrier to infection, or prevents malware from functioning. It does neither. It blocks inbound connections to certain network services you're running, such as file sharing. It's disabled by default and you should leave it that way if you're behind a router on a private home or office network. Activate it only when you're on an untrusted network, for instance a public Wi-Fi hotspot, where you don't want to provide services. Disable any services you don't use in the Sharing preference pane. All are disabled by default.

What is the best way to manage multiple ipods using the same itunes?

Hi Everyone
i am trying to manage three different ipods through the one Itunes, all with very different tastes, not sure if I am doing it the best or easiest way so does anybody have a simple solution on what you're supposed to do, to keep it all simple!
Cheers
Liv

If you have created a new Windows user account you need to log out and then log back in with your original user name. By default each Windows profile will have an independent iTunes library.
If instead you managed to create a new library within the same profile. click the icon to start iTunes and immediately press and hold down the shift key, keep holding until asked to create or choose a library. Click Choose and navigte back to your original which should be at <User's Music>\iTunes.
Your question as posed was:
What is the best way to manage multiple iPods using the same iTunes {library}?
in which case Selected Playlists is probably the best approach. Simply create a playlist for each device, Alice's iPod, Bob's iPhone etc. and sync the device with the appropriate list.
tt2

What is the best email server for ios

What is the best email server for ios

Im going to go ahead and assume your talking to me?
    I ended up in this thread in search of a functional Exchange ready mail client capable of supporting multiple mail profiles. Since there are no free applications to accomplish this in the app stor, which I can find, I figured I'd leverage the 'community' for some direction before throwing good money after bad.
   As I assume Im not the only one to do this, I figured I'd help straighten these folks out on the lingo (as they werne't applying it properly) and the sassy 'sound like apple users' comment references the way ANTI-apple folks assume you people are less than adequite users.
   If I called an apple an orange, you would say I was wrong. If I did it repeatedly, after correction, you would assume Im incompetant.
   Seriously, its a stupid machine and will only do what you tell it. (true for all computers, apple or otherwise)
   So if I ask for a mail client, dont give me a provider. If I ask for a service, dont name a client.
    Your right, this post is old. And stilll doesnt have an answer. . .
    In response to MichelPM, I didnt call your baby ugly. The 'Bandwagoning' is cute though. My advice is sound, and helping you folks not to look so... well... stupid.
    Since you interceded though, how about a little help? What mail client do you use? Is it exchange Compatible, with active sync? Does it offer multi-profile support? And the clients want images in their signatures, and multi signature support. (I can do this with my android phone )
Im looking forward to your responses.

What is the best spec to run multiple programs with photographs? Includes: Lightroom, PhotoMechanic, and Internet DAM system?

What is the best spec to run multiple programs with numerous photographs? Includes: Lightroom, PhotoMechanic, and Internet DAM system?
For a Macbook Pro. What's the least amount I need to process, upload, download images using these 3 programs?
Thank you.
pt

That's a nice system Kevin, and it will work very nicely with Photoshop. I do take it that you have 16Gb RAM in Total?
250Gb SSD is a good size, but you can still run short, and that will affect Windows performance. When you get your system, instal WinDirStat which gives you a graphic display of everything on your drive, like below. Clicking on any of the large areas will tell you what and where they are, so you can think about moving cache folders etc. to one of the HDDs.
Leave the Pagefile.sys on the boot drive. Think about disabling Hyphenate as it takes a ton of space, and too often crashes on wake up.
My Documents
Desktop
Downloads
Look at Bridge cache
iTunes backup
Other stuff like that.
Think about another 500Gb drive just for Photoshop Scratch. Drives are cheap as chips nowadays
Do yourself a favour, and invest $100 in Shadow Protect (or similar if there is such a thing) SP saves incremental backups every 15 minutes (you can set the interval, but it has no impact on performance with a system like yours). If you have a problem you can mount the back up at any of those 15 minute points, and open files from it. You can also make a bootable DVD image of your C drive, and be back up and running five minutes after disaster strikes.
Optimize Performance in Photoshop
Photoshop CC and CC 2014 GPU FAQ
For more ideas, swing by the Premiere Pro Hardware forum. Those guys are serious good at this stuff, and you'll find links tips and ideas.
Happy computing, and have fun with your Creative Cloud® apps.

What are the best AirPlay speakers for Apple devices?

What are the best AirPlay speakers for Apple devices? I would like to get some good speakers to be used with my iPod, iPhone and iPad. Ideally, they should be able to play using AirPlay and be quite powerful, but with a good design if possible.
I am particularly interested in the Fidelio range of speakers by Philips.
Thank you for your help in advance.

Best is going to be a matter of opinion. What environment are the speakers going to be used in? How large is the room? What type of music are you going to play? What features/functions would you like in the speakers? What price range are you looking for? All of these are going to effect which speakers will best fit your needs.

What's the best protective shield for my 3GS?

Hi Everyone,
Sorry to bother, but I just got a new iPhone 3GS and I'm wondering what's the best protector to put on the phone. I understand the 3GS has a new type of "coating" on the screen so I don't want to do any damage to it. I also heard the 3GS has these proximity sensors so I don't want to get a case that will interfere with that. Anyhow, I wanted to get an Invisible Shield, a full body one, but wanted to make sure I don't do damage to the phone. I've read the forums and it seems there is no definitive answer on whether or not the Invisible Shield is the best one. Any iPhone experts know what's the best protective shield for the 3GS? And will the Invisible Shield do any damage to the screen or coating on the new 3GS? I talked to a person at Apple and they didn't think it would do any damage, but to be honest, she didn't sound as knowledgeable as I would like. I'm sorry for being paranoid. Can you guys chime in?
Thanks!

The reason for no definite answer is that it matters what YOU are looking for in a case or protective screen cover...
To answer your shield question...the shield product itself will not damage the phone and that coating is not to prevent scratches...it's to help prevent fingerprints...since you plan to put a screen cover on then that coating doesn't really matter...HOWEVER, the way that the shield can harm the phone is IF it's not properly installed by YOU...since the design of that product calls for a liquid solution agent to be used to adhere the cover to the case of the phone, others have gone overboard with that liquid and then ended up with water damaged phones due to the faulty install...If you install properly then it's not an issue
Personally I used a full shield cover on a previous phone and hated it...so again it's all up to your taste...
What I currently have now is the simple Apple sold Anti-Glare screen cover you can buy two to a pack for 15.00 at Apple store...I have used since first Gen iPhone and loved it...
I have a Case-Mate leather hard plastic case but am not thrilled with it since the edges are raised around the edges of the screen and sometimes prevent me from hitting a button right up against the screen edge...so I don't use it much...
Other covers made by Case-Mate like the Barely There cover don't have that problem...so you really need to shop around and see what case you like and what you dislike...
Cases specifically sold to be compatible with 3GS will not interfere with either the proximity or any other sensor on the phone face...

What is the best bluetooth headset for iPhone 5?

What is the best Bluetooth headset for iPhone 5 for talking no music?

I've tried all the majors: Bose (1 model twice), Motorola (2 models), Jawbone (5 models) in almost every model.
Bose is good but such an odd nub just sitting there on your ear - bad athestics. Device is fine but not right for me.
Motorola seem to have troublie with iPhone specifically.   They don't stay paired and noise-cancelling has been bad. I tried 3 pairs of the Elite Silver with no luck. Great concept to have a case that charges the device but bad device. Same issue with the Oasis.
Jawbones are good and I've had 5 of them.   They seem to degrade in voice cancelling quality over time based on feedback of people I talk to but they are solid.   I'm sure I just beat them up but they do seem to go bad.
My best experience have been BLUEANT, both the Q2 (bought 2) and teh Q3 (own 1).   Q2 are solid but they have this issue with a metal screen that inevitable breaks off, not affecting call quality but a pain.   Q3 have fixed that but they are just a bit bulkier.   Good features (voice answer & address book) and solid. These are just awesome and good instant on that simply isn't true of all of the devices. Only downside has been no battery meter on the Q2 for the iphone but a solid workhorse.
I just got a new Motorola Whisper and so far I'm impressed.   First motorola that has solid noise reduction and doesn't seem to have the random unpairing issue with the iphone.   It's early yet but great design and comes with a case.
I hope this helps.

What is the best design pattern for multiple instrument​s?

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What is the best design pattern for multiple instruments?