I have upgraded my MBP 13 2010(2.4 GHz Core2Duo) to 120gb SSD, a new battery and 8gb RAM last year. Although couldnt resist getting the Macbook 12 2016 Core M3 1.1 GHz for 920$ in Best-Buy Sale last weekend. Now I am thinking which one to keep for me? Macbook 12 has nice screen, extra-light and has new tech. Although both can perform my daily tasks easily, I dont render videos much..but retina screen is the real worth upgrade i can see now.. Should i sell off the MBP 13 or keep the Macbook 12 ?