Don't believe any so-called "guides," because the best display settings for Apple iMac computers are those that get along best with your eyes, that's all! While there are a bunch of methods to find the best display settings for Apple iMac computers, new or old ones, the one that I noticed to work better is to mess with those settings until you're happy with what you see.
Just as a reminder - if you're going to do what it usually takes to adjust your iMac display settings - Calibrate, adjust Gamma, the target white point, and Brightness, that's most of it. If something's not working...you can sue Apple!
I know the advice above sounds lame, but it seems more and more people find reasons to sue Apple these days. When talking about iMacs, the latest lawsuit is also related to the display problems of this kind of Apple computer, so here you have it...
According to AppleInsider, "Florida resident Roman Huff observes that his 17-inch iMac bought in November 2006 -- here labeled an iMac G5 despite clearly being an Intel-based model -- is representative of a display defect that affects nearly all owners of that generation of the computer."
The lawsuit here could end up with Apple being forced to refund repair/replacement costs of all iMacs manufactured in 2005-2006 and having the notorious vertical lines display problem. Anyway, we're only at the beginning of this legal battle, so we won't get to see the results anytime soon, I guess.
