Both have the same tech specs. The 15" classic MBP with anti-glare hi-res screen and self-upgraded to 16 Gb RAM and an 256 Gb SSD (Apple installed)... ...and the 15" 256 Gb SSD retina display MBP with 16 Gb RAM (a must in my opinion, as you can't upgrade).... Both cost $2500 (without Applecare) Difference: how will the beautiful hi-res anti-glare screen compare to the retina display for serious photography and graphic work? That has to be established. the classic model is a mature product, and it will run relatively quiet. What about the thinner retina MBP? Same power as the thicker model, less space inside for heat sinks (if you call it that at all in a laptop) than in the thicker MBP I'm really curious if the thinner retina MBP holds up in practicability to the classic model. I'm also curious if there will be a difference in the keyboards.