Why should I choose a T400 over a E6400?

I'm a graduate student about to start a master's program in a field of engineering. I need something that is sturdy, dependable, non-intrusive, quiet, cool (temperature), light and compact. This is why I'm interested in the T400 and E6400.
For around $750 (incl. tax) this is the T400 I want to get:
P8400
2gb, 1DIMM ram
250gb hdd
14.1 LED WXGA w/camera
CDRW/DVDROM
Intel 5300 Wifi
Intel graphics
Media card reader
6-cell battery
Vista basic (will buy vista ultimate and upgrade with student discount)
1-year warranty
For less, I can get this refurb'd E6400:
P8700
2gb, 1DIMM ram DDR2
160 gb HDD, 7200rpm
14.1 WXGA+ LED backlit
Intel 5300
Intel graphics
Vista business
6-cell battery
DVD/RW
3 year warranty
I'm really torn between the two. I like the T400 for its understated design, rubberized outer surface, and rollcage. I like the Dell for its value and offering more for less. 
I havn't been able to see them or try them in person I and probably won't be able to.
So I'd like to here from owners why they prefer their Thinkpad over other notebooks, and if you're tried both I'd like to hear about your experiences. 
Thanks.

Hi thesundandthemoo,
Welcome to the Lenovo forum
If you haven't already, I'd recommend heading to notebookreview.com and reading their reviews of both the E6400 and T400. Also visit their forums and see what users have to say.
As this is a Lenovo users' forum, the opinions you get here are biased. But I guess you know that.
Anyway, my opinion: The Dell E6400 looks great on paper, is a great design. I've never set fingers on one, but from the reviews I looked at before getting my T500, it seemed it is somewhat flawed in execution. I recall reading reports of malfunctioning hardware and general flakiness. Those reports were anecdotal only, and to be fair in this forum you will read of some users having trouble with their T400's too. No manufacturer is immune from letting an occasional lemon slip through. If we had accurate statistics about quality control we could make a rational choice. In the absence of those, we're left with:
Anecdotal user experiences and evaluations of laptop quality;
More anecdotal user experiences of quality of service in addressing any problems.
In my case I bought my T500 (over E6500) based on my personal experience with earlier ThinkPads and excellent support and service from IBM / Lenovo / EasyServ when the occasional problem arose. My T500 was not 100% perfect from day one: it had a somewhat flexible keyboard (by ThinkPad standards), and a problem displaying digital video through the dock's DVI to one of my monitors. To Lenovo's immense credit, they have fixed both problems to my complete satisfaction. It is this willingness to listen to customer complaints (in this forum and elsewhere) and commitment to make things right -- in combination with excellent design, build quality and driver support -- that makes me such a fan of ThinkPads. They are the first laptops I consider when making any new purchase for myself or others.
Good luck with your search, it would be great if you let us know what you decide and why.
Best regards,
Frank
Results of Your Ideal Business-Class Laptop survey, concluded 2009-07-29.
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    Do you know a little bit of marketing rules?
    Do you know, how difficult it is to bring some one to action - espec. protest?
    Do you know about the % returning of feedback surveys (compareable... = 2-5 %)?
    (Believe me and follow regarding blogs: That are many more than 33.000 protests - no question)
    These subscribers in the last Q are because they spared all their new features to their "great CC day" on June 17th and because the discounts for CS6 users will end soon.
    These numbers (and in my eyes they are anything else than good) are a result of their forcing evil plan.
    They will drop down in August, when their are no longer discounts for CS6 users. We will see.
    Also let´s wait on the numbers, when they have to rise prices, and there is no longer income from CS6.
    700.000 of 12 Mio & the same amount of pirates (estimated) during a year a great success???
    Throwing half of the usership into garbage a good plan? = Reinventing economy?
    If you think, there will be no users who will replace Adobe with competitors - I´m one of them.
    Always was working parallel with QuarkXPress (and I like a lot - faster than InDesign - espec. in case of big documents (lots of text)). Also OWN the lifelong Right to use my Apple Video solutions (and thinking about investing to Avid now). My FreeHand still is running (also faster than Illustrator - even it is so old) ang still good for 95% of Vector Graphic. In case of Web-Design I have no great problem - Flash is slowly dying and competition is given. The only App not 100% replaceable is PS. But if it´s necessary, my MasterCollections will work the next 10 years on their actual MAC PROs (or virtualization). There is nothing I´m missing of their overwhelming solution.
    If I would estimate: CS6 will become the WIN XP of Adobe. It will still survive over decades
    (...or  Adobe is bought by better managers after it´s end)

  • 64 bits: why should I use it?

    Just for the sake of discussion: If I have a program offered in 32 and 64 bit modes, why should I use the 64 bit version?
    For example, the well known Videolan Player, aka VLC Media Player, recently updated to version 1.0.2, comes in 32 an 64 bit flavors. When would one version be used in lieu of the other?
    And saying "because it is bigger and hence better" is not true. Even Apple points out in the developer pages about the 64-bit fallacy: in that mode, all data structures duplicate in size and if the hardware remains the same, performance will suffer cause you have to push twice the amount of information.

    I just did a test with VLC Player (version 1.0.2), I played the same video in both 32 bit and 64 bit modes (NOTE: NOT talking about the kernel, but the program). Played it several times in both modes and even alternated between modes. In 64 bit mode it caused one of my processors to spike to 104% usage for the first 20 sec before dropping to 4-5%. In 32 bit mode processor usage remained at 4-5% the entire time.
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