I am looking at the 2011 iMacs for my wife. I will probably order a stock one and figure out how to put in my own SSD since I have a good SSD drive in my mac mini right now. Then I will probably upgrade the RAM and the hard drive to a 2tb myself while I do the SSD. Obviously the i7 would be the fastest for photoshop. However, which iMac do you think is the best bang for your buck? I may just get the base 27", and do the upgrades myself. I have a habit of turning around my computers almost every other revision, so I am not sure I want to go all out on the i7 since I doubt it will have the best resale value down the road. Will I see a huge difference for photoshop between the base and upgraded, and the i7?