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You can "get used to" just about anything, but why should you?

In this case, you shouldn't let anyone decide for you - it's your eyes and your body.

Well said.

I tried four 27" i7 iMacs at the beginning of the year but returned them because of the yellow display issues. I had to go back to my old 20" iMac which was horrible at first but after a few hours I was used to it again, and haven't missed the 27" that much (well, missed the speed of course).

I'm now considering the 21.5" iMac, for having a more compact (focused?) machine. Just wish I knew for sure they have no screen issues.
 
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