I'm considering getting a 13" MBP as a graduation present for myself. However, I'm still undecided on which one should I get: the one with 4GB/500GB or maybe paying a little more for the 8GB/750GB model. I would like to use for the basic stuff (web/office/etc) and maybe for a little photo editing. I want a computer that lasts about 6+ years (the Sony I'm using right now it's almost 6 years old, and it still works perfectly), so I wonder if the 8GB one will be better, although my computer with only 1GB/120GB still runs fine, so maybe the 4GB/500GB will last me a long time. Any help will be appreciated, thanks!