I'm looking at buying a new rMBP for work. I currently have a 15 inch mid 2009 2.66 Ghz intel core 2 duo and looking to upgrade. Basic Needs: 512GB HD 16 gigs ram (I think...) I don't do video work now but likely that minor editing in Final cut may be in the future. regular photoshop work (not too heavy) along with multiple programs, a large amount tabs etc at same time. I was going to buy a 15 inch but I'm either stuck with the $2599 model or upgrading the $1999 model to basically the same price. If I go to an upgrade top of the line 13 inch, what am I missing in terms of graphics power and processing power? I occasionally game and may end up running parallels. I also want to keep this computer 3-5 years if possible.