I'm in the market for a replacement to my old back MacBook Pro. I thought the new 13" retina was a no brainier choice but now I'm thinking the non-retina may make more sense. I'm an educator so hauling lighter loads makes more sense - hence the 13" choice I mostly use my computer for creating presentations, and accessing information online. I have recently gotten into digital photography and plan on getting into some video editing. I also do some light ProTools work. Correct me if I'm wrong, the non-retina is faster in relation to its retina counterpart and therefore may serve me longer bu I miss out on the beautiful display. Any thoughts will be greatly appreciated.