Okay well I am currently the owner of a original macbook air. I love it! The thing I love about it the most is it's sleekness, but it's just not internally god( I have 2 gigs of ram and alot of times when I use my computer I end up using it all, and it becomes really slow( I have sold it on ebay and I am now looking at the macbook air 11" and the macbook pro 13" and 15". I don't know if I should trade beauty for power! So I am wondering how good the macbook air 11" preforms, and if I will see a big difference between size in the macbook pro! I am scared the macbook pro will be thick! One of the main reasons why I want a macbook pro is because I can have 8 gigs of ram