Hello I am looking to replace my 2009 13" MBP. It has been a great machine, but I am wanting to upgrade and hand my old MBP down to the kids. Mostly I am getting very slow rendering for simple videos that I would like to speed up some and just the desire to have a newer speedier machine. I am going back and forth between a decked out MBA with the 512GB SSD or a rMBP 2.4 with 16gb ram and 256GB SSD. I surf the web, edit/organize photos, edit simple action cam videos, blog and general use stuff with the iWork type stuff. Any thoughts on one machine over the other?