I've decided I definitely want a 15" rMBP. If I price a 16gb base model 15", it almost seems worth to get the top model 15" for a few hundred more. It is quite a jump in money. I want to run win 8 in bootcamp with office, spss etc. Maybe play the sims 4 on it. Would the base model be enough or should I make the jump to the high end model? I can afford both but always good to save money wherever.