I currently have a DC G5 2.3 with 2.5 gigs of ram. I want to upgrade to a intel machine so I can also run windows for flight simulator X . On the mac side I run Abobe creative suite 3 mostly running Photoshop. I also have a MBP 2.4, which runs Photoshop and Flight Simulator very well, but after a few hours it gets very hot. I like having a Desktop along with a laptop. My question for 24 iMac owners will I be happy with the performance and are there any heat issues? Also is it easy to add ram or am I stuck with expensive Apple ram? Thanks