just a thought since there's so much threads about bad imac i7's.... who has been lucky and actually has a perfect working (no yellow tint, no loud HD, etc) imac 27 i7?
I took delivery of my one and only week 47 iMac in November. It has no issues whatsoever. There is no yellow tinge. The screen is beautiful. There is no flickering on the display and no loud HD.
I haven't even run the 27-inch iMac firmware update yet since I had no issues to fix and I'm afraid it might introduce some.
As bad as things sound by the many reports of problems I still have to say that I don't think it is at the point yet where one is lucky to get a good one but rather unlucky to get a bad one.
I'd run it with VMware if only the bar on the top could be removed...