Hello I've recently purchased the maxed out store model of the 2011 MBP 15 inch (basically high res and 2.3GHz). I'm interested in keeping it in the best condition as possible so I may sell it near the end of the cycle to purchase the next refresh while paying as small difference as possible (hopefully no more then $400) however I really cannot imagine the real numbers. I believe there is a population out there who does this, any insight or ideas on the matter? Specifically what you believe is possible to get back from a $2750 investment (also note I plan to get a SSD when prices come down, as well as an additional 4gigs of RAM) speculate. and thank you as always!