I currently own a 2012 MBP (13in, 2.9Ghz i7, 16Gb ram, 750GB HD). The programs I use on a day to day basis include Ableton, Logic, Microsoft Office. Slightly less often I use Final Cut Pro (which has always been painstakingly slow) and Photoshop. I currently have used up 350gb of the 750gb internal memory. I have a year left with my warranty and I was thinking of selling it while the resell value is still high. But my concern is the non self-upgradeable options on the new rMBP, as upgrading with apple is ridiculously expensive. Any advice?