I'm looking to buy a nicely loaded used Mac Pro tower to replace my current 2009 Mac Pro 2.66 Quad-Core. Currently have 16gb Ram, 2-240gd SSD HD's, and a 5770 video card. I'm a professional photographer and my main software use are CS5 (soon going to CS6), Aperture 3, Hasselblad Phocus, and Photo Mechanic. My cameras vary from 22-40MP in file size. I'm looking for a machine that will give me a noticeable bump in performance. Which MP do you recommend? What kind of price should I expect to pay? Also how much can I get for my MP? 2009 (4,1) 16gb RAM (OWC) 5770 Video Card Keeping the SSD HD's Thanks!