I've made my decision after seeing both the 21.5" and the 27" iMacs at Best Buy. The 27" is simply too big and I do NOT need a media center. However, the question then becomes, which 21.5" iMac to get, the base or the $1499 upgraded computer? I know the kneejerk reaction to get the upgraded model, but I'm not convinced I need it. I have considered the 3.33 Ghz upgrade, but is it even necessary? Given that I do not play games or do anything more intensive than running a browser, iTunes, and word processing at the same time, surely the base model is good enough, and I can save $300. Convince me otherwise, please.