I currently have an 867 G4 Quicksilver. I've had it since they were first released so it's starting to show its age now. I would like to do some gaming but I dont do a whole lot. I have a ds and wii for most of my gaming needs. I'm looking at the 24" iMac or a tower with a 20" screen. The price difference is big enough that I'm very tempted to go with the iMac. However I love the expandability of the tower and the ability to upgrade it. I know I dont need the power of a tower but I plan on keeping the system for a long time and I think the tower would be better for that. However if I get the iMac I would probably just upgrade sooner. Any suggestions?