Buying a new iMac. But when!?!?

Question

Hello everyone. I am very excited to say that sometime in the next few months I am going to be getting my second iMac! I bought my first one (a 17" 1Ghz iMac with 768 RAM) about 5 years ago while in college... and it has been a good ride ever since!
The computer still works perfectly for every day stuff, like email, the web, iTunes, and such... but it is really starting to lag when I do iPhoto, iMovie, iWeb, etc. I'm sure most of you know what I am talking about.
I'm finally ready to make the upgrade now that Leopard is here... and I am just trying to make sure that I time it right. When I bought my last one, I made the mistake of buying about 2 weeks before they added USB 2.0... which would have made a huge difference for me, since one of the biggest reasons I am upgrading now is that I can no longer sync my iPhone with the msot recent update which killed USB 1.1 compatability.
But, that is neither here nor there.
Anyway, I am hoping to buy in the next 2 months if possible, but for many reasons I want to make sure I time it right.
1) There has been quite a few problems with the first alum gen of iMac screens, graphics cards, etc. I would like to wait for the second revision if possible.
2) Macworld is in January... is there any possibility new iMacs will come out around that time?
3) How far do you guys think Blu-Ray compatability is from being added to macs? When it comes out do you think it will be burnable Blu-Ray or just readable?
I found a website which tracks updates to all of Apple's computers, and attempts to tell you whether the time to buy is right or not, and that seems pretty interesting... http://buyersguide.macrumors.com/#iMac
But I am curious about what you guys think. If you were in a position to get a new mac... but weren't really in a big hurry... when would you buy? Right away? After Macworld? Wait until the next version comes out (whenever that is)? I guess there are nearly limitless options here, and obviously you can't always wait because things like this are always changing and always improving.
But, nonetheless, would you wait for the next revision? When do you think it will take place?

Answer 1

It's unlikely there will be any changes to the recently released iMacs at Macworld Expo. I've just recently purchased a 24" 2.8GHz iMac w/750GB HD, and immediately upgraded to 4GB with Crucial memory, and it's working out great.
The ATI HD 2600 video card issue was resolved in early November. Anyone having a problem now is probably having a hardware issue, vice the software issue fixed by the early November patches (1.2 for Tiger/1.3 for Leopard). My iMac was built in week 45, and has had NO video anomalies at all, certainly no freezes attributed to the video card issue.
The front of the new iMac is covered with a large sheet of glass, which is very reflective. However much that concerns you depends on you. It concerns me not at all. The new iMac 24" LCD is very bright, overpowering any reflections while the Mac is in use. There's a window behind me that I've never noticed while using the Mac.
The only issues I've had with the new iMac involved incompatible apps I migrated over from my old 2.7GHz G5 Tower. I've weeded the troublesome apps out and my Mac is now working perfectly.
It's probably wise to wait for Macworld Expo the third week in January to see if there are any surprises, but you should have no concerns about the currently shipping 24" iMacs. They're great machines.