Ok experts, here's yet another "should I buy used" thread. So unfortunately my 2009 MBP bit the dust unexpectedly and I need to pick up a replacement. Buying new or refurbished is really not an option right now so I have taken to Craigslist to see if I can find a replacement that will last me the next several years. I also really want to stick with a 15". I do some design work (photoshop, illustrator, indesign), as well as photo editing with Lightroom. So... found an option to buy a Mid 2012 15" Retina with the following specs: MacBook Pro (Retina, Mid 2012) Processor - 2.3 GHz Intel Core i7 Memory - 8 GB 1600 MHz DDR3 Graphics - Intel HD Graphics 4000 1536 MB Storage - 256 GB From the pics it appears to be in excellent condition, one owner, 520 charge cycles on the battery. He was asking $950 and I talked him down to $800. What say all the experts here? Thank you so much!