I know I wasn't the person you asked, but here are my thoughts. I may return mine for refund, if it has the yellow tinge and it bothers me. I've never seen yellow tinge in person yet.
However, if I have to return it, I'm going to use my current iMac a while longer. I won't be doing anything earth shattering new with mine, I Just thought it was a nice machine to upgrade to. Who could have thought it would have so many issues?
I guess for similar performance on the Mac side, you'd have to go to a Power Mac (sorry I mean Mac Pro), and they are probably due for an update before too long.
I feel bad for someone really in need of a really fast computer and big, perfect 27-inch display right now. They are in a tough situation unless all these reports of flawed machines are exaggerated.