Hi everyone, sorry this is AGAIN a "need help before buying" post. I'm basically looking to buy a MBP for movie production : I will do data transfer (footage into USB3 to TB2 drives/USB3 drives). And maybe some playback of very large 4K video files. I was looking at a few options : First of all I missed my chance and saw a rMBP 15inch 2.4ghz(ish) for 1900 (canadian) and didn't order it. I've got my eyes on either another rMBP which is a 2.7 with Geforce 650M (june 2012) for 2400$ or a brand new one with maybe 2.5ghz for 2200$. Your advices on these models? Is the Iris Pro GPU good enough? Is 2.2ghz enough for my tasks? Thanks soooo much!!