I'm in the market for the 20" iMac mostly because I need something with more screen real-estate and speed than my 600Mhz iBook. I also want a SuperDrive. The 20" iMac seems like a decent value due to the fact that's it's only $600 more than the 20" cinema display. I don I still have a nagging thought that I'd be spending my money poorly and the "guts" of an iMac are so similar to a Powerbook, but unportable that I'd regret buying a iMac. I don't need a portable machine, but I've been known to enjoy using my iBook on the couch while watching TV or something. Of course there's the nagging idea that for the same price as a powerbook I could get a G5 tower. Anyone else who was on the fence previously want to talk about their decision and why they are (or are not) happy with their decision?