I went to the Apple Store today, and after much decision, I went ahead and bought a 20" iMac (2.4Ghz). I've been using it for a few hours now, and I must say it's an amazing system. I love the keyboard, and the Mighty Mouse isn't half as bad as I expected it to be. I'm going to mess around with some of the iLife applications tomorrow, and hopefully, me and my iMac will have a good few years together! 