I'm buying a 15" MBP with hi-res screen for my son for his graphic design studies. A refurbished Oct 2011 model (2.5GHz Quad-core Intel i7) costs $1829. A new one will cost $260 more (after the student discount and $100 gift card you get with purchase of AppleCare on a new MBP). I wonder if it's worth it to buy new? I understand the difference will be a significant difference in power and speed that will really be helpful for design applications? Seems like it's not that big a price break on the refurb, though it would be nice to save what I can, I'm wondering if buying new will make up for the price difference not just in performance but in longevity?