Btw.. I'm an engineering student and I'm going to use it at school that's why I don't prefer the Macbook Pro because it's big, bulky and heavy. I want the Macbook Air because it's sleek, light and it fits my bagpack. And also I need the cheapest possible that's why I really prefer the Air Model. (because I'm just a student and my savings from my part time job is not that big so my budget is tight and only around $400-$600)