What exactly is wrong with the display of 20" model vs. 24"? As a casual broswer of this forum, it seems like LCD of 20" model is the worst thing that has happened in Apple's history.. It's pretty much the most important factor since after I buy an iMac, I'm stuck with its screen for a long time. Money is not a problem, I could pick either one, but coming from almost 4 years of using mostly just the 12" iBook, I honestly don't see a huge screen as a must have. Would seem like stupid waste of money, really. However, a vastly better screen is entirely different matter. Also, was the graph card in 24" model upgradeable? I recall seeing such a rumor somewhere. If so, then this choosing problem is solved for me.