Topic - Retina Pro So I was fortunate to come upon and open-box, never registered/ 2.3GHz/8gb/256ssd at a local Best Buy. I was originally looking out for the 2.6GHz /16gb/256ssd refurb from Apple.com. I want to use a lot of the Adobe CS6 apps, including moderate video editing. The price I got on the lower end model was $1740 (including tax). It seems like a pretty great machine. The mid-model from the Apple Store (including tax) is $2267. So, I am trying to determine if the .3GHz and 8GB RAM upgrade is worth the $532.00 cost. I am having a difficult time finding any more information than, "it will be slightly faster and more future proof." This is my first mac, and I usually keep computers 3-5 years. Any advice. What would you do?