Hey all - I'm in need of a little bit of advice. I'm taking the plunge and getting my first Mac, a 15" MBP Retina. However I'm torn between the two types. More so torn between the graphics on offer - Iris Pro, or GT750M. I don't do much gaming (if any at all), but this machine will be my desktop replacement, so I'm a little worried about giving up my trusty GTX580. I've been through a ton of articles comparing the two, and the trade off with the GT750M seems to be a hotter laptop, with less battery life, but of course better graphics. I guess I just want some opinions from you guys who actually use the machines, as I've exhausted myself looking at charts with FPS pasted everywhere.