Yep its a fair deal of money Ive been saving for a few months. But I think Ill be pleased with this computer. Especially if they are even smoothing up the performance more as you said.
EDIT: I would definitely recommend getting more RAM, I find that games often eats up 4GB quite easy and I noticed a remarkable difference when I got 8GB for my old 2009... I havent even opened my new laptop yet but have already ordered 8GB from Dustin in sweden. Actually, what memory does your iMac use? I have 2x1GB 1066MHz lying around...and the iMac has 4 slots instead of two,no?
Yep, my mac has 4 slots. I currently have 4GB inside my iMac! But its shared so 2GB on one slot and 2GB on the other slot!