Sorry for bad expression. MBP 15' GT330M 512 VRAM or iMac 27' 5750 1G VRAM Reason i love MBP over iMac: portable (not like 13',but still,it's a laptop)/multi-touch trackpad (loving it after tried my friend's MB) Reason i love iMac over MBP: powerful/wireless keyboard/bigger IPS screen iMac is about $83 Australian Dollar cheaper than the standard res MBP(HI RES is $127 more) Me: I do not move much, but thinking of might be better if i can move in house or occasionally bring it to visit friends. I do not need too much power, just enough to play Diablo3 will be fine. how much difference between a same setting game (Diablo 3 like game) perform under 1440x900 by GT330M 512VRAM and 2560x1440 by 5750 1G VRAM I think my hand is not fit for magic mouse or not very comfortable, but the wireless keyboard is not bad.Maybe add a magic trackpad is a good idea, anyone have experience that is the magic trackpad as good as laptop's trackpad in using? someone say it's too sensitive. iMac is just updated and MBP is about half way to next update... is there any chance next update will bring more powerful GPU or APPLE use same GPU for two updates in history. Which one is better for me?