Am a newbie to the Mac and to these forums...so maybe this q will sound lame..so bear with me. I am going to change over to a Mac (never used one before)...and have been waiting for the core 2 proc's to launch...now that they have...I am confused! I got 2 configurations: 20" with 2GB RAM and a 256MB ATI Radeon with Apple Care for $1978 or 24" with 1GB RAM and a 128MB NVidia GeForce with Apple Care for $1999. a) I plan to use the iMac for everyday use-photoblogs, personal website, music, movies, internet, sound mixing et al. So apart from the amazing screen size...am I missing something when I think a loaded 20" is sufficient? b) How would one compare a ATI Radeon with NVidia...am not an avid gamer on the computer...but would like the vram to make a difference to the multimedia I intend to use this computer for... Thanks guys!