I'd go for the iMac. I was thinking of getting the 20" myself (that 24" is nice, but the 20" is the best deal). The main thing holding me back right now (besides money) is the thought that Apple will come out with something even better in a few months. OS 10.5 will be out early next year (end of January?) and I'd rather get that pre-installed. Also, I keep waiting for the next processors which seem to be coming pretty soon. No matter how fast the CPU, modern OSes always seems too slow to me. (but I just own an A500, so what do I know about speed? ;-))
That "mouse moving by itself" problem has happened to me on 7 different PCs at work (desktop and notebook) and 4 different versions of Windows - using the Microsoft Mouse. I think it's a Windows or driver bug. It's pretty pathetic when even Microsoft Mouse doesn't work properly with Microsoft Windows.
