Ok, so after almost a year of the rMBP 15", I am honestly sick of it. Don't get me wrong, the screen is great, but the size is just dreadful. I travel on 8-12 hours flights at least monthly and its a pain to use portably and end up just using my iPad. 15" is truly the huge deal breaker from me, but I atleast learned to never buy laptops larger than 13 inches. Can I go to the apple store and give them my lap top and they give me the rMBP 13" and I lose some money (since I used it for a year)? Or should I just wait till the newer models come out and I sell it on craigslist?