Get the retina MBP. You won't have to think about setting up, backing up, connecting to, updating, or securing a remote server if you do. Unless you enjoy doing those things, you are better off saving that time and especially effort for other things like family time.

I get awful headaches using anything more reflective than the MBA display, so unfortunately Apple's retina notebooks are all unusable for me. It is something to consider if you are coming from a high quality matte display like a Thinkpad.