Hello I'm currently saving for an iMac. I was thinking of the 24" model but having been in the Apple Store for a test-drive, the 20" is just fine for my needs, nice screen size for a desktop- but which one? I won't be playing demanding games on my iMac- at most the odd game of Vice City or Age of Wonders or a couple of other classics- nothing like Crysis etc. I wondered if the 2.4GHz/ATI 2600 option offered any other serious benefits. I will be recoding video and DVD files for my iPod but don't mind waiting an extra couple of minutes for a slower CPU to do it. I will be upgrading the RAM myself to 4GB almost straightaway. EDIT: also- the storage on either is ample and I have a 120GB and a 200GB SATA I can put in a caddy for extra storage. I neglected to see which graphics/CPU option I was testing the other day, but do HD Quicktime files or large libraries of 1080p photos bog-down on the "lesser" Mac using Coverflow and QuickLook? Essentially, doing day to day tasks, is there a difference? I know it's "only" £150 between the two models but that's £150 that could be put towards a new iPod, a Time Capsule or RAM upgrade Many thanks for your time and... Hello!