My baby boomer dad's iMac G5 has probably bitten the dust. Therefore, I'm going to get him one of the new ones and was hoping someone else here had used the new models and could give some input. I'm going to get him one of the 21.5" models. I just want to know if the extra 500GB of hard disk and the video card upgrade are worth $150 more -- I'm going on education pricing. I'm pretty sure they are, but I know nothing about the video adapter used in the higher model -- the ATI Radeon HD 4670 with 256MB of GDDR3 memory. I notice that it has dedicated memory instead of shared memory, which I know is a plus. I was just hoping for input. If you know of anything else I can look for when tricking the machine out, let me know. I don't see anything worth the upgrade except changing to a wired keyboard with the numeric keypad and maybe adding a remote. Thanks for the help!