Hey all, Trying to decide between dropping the cash on a base model 27" iMac 2012, or investing in a refurb rMBP 15" (i7 2.3Ghz). I'm primarily concerned about best bang for my $1800, and which will last longer/be a better casual gaming machine. I play League of Legends on my current MBA 13" and it runs at a pretty steady 30 FPS with most settings on High/Medium, so I feel that either will probably be a pretty hefty upgrade, but still, I can't quite decide if the overheating and form factor (not a beautiful 27" display, just a beautiful 15" display ) are enough to sway me towards the iMac. For the record, I do most of my gaming at home, and spend most of my "away from computer time" browsing the web on my iPad. I have my MBA hooked up to an external Samsung monitor, but that display maxes out at 1920 x 1080, so I'm guessing that hooking up the rMBP to the Samsung will degrade the Retina-ness of the laptop anyway. Anyways, let me know what you guys think. Any and all help appreciated!