Hello, I have been using the 17" MBPs for many years. I want to get a lighter computer. I am trying to decide between the 2012 15" MBP and the 15" MBP Retina Display. What suggestions do you have? The Retina Display model seems to be lighter but I do not know if I can stand the reflexive screen. A very short period of use at the Apple Store did not cause any eye strain problem. I am a programmer and I spend many hours each day on the computer reading, writing and programming. All my MBPs have matte screen. I don't play games but I do 3D animations and simulations. Do these two models generate the same amount of heat and noise? Also, what are the problems with these two latest models? I heard of ghosting problem with the Retina Display model. Thanks.