First actual post here, but been looking around the forum for a while, trying to make an informed decision on my first apple notebook. Just purchased the air and I'm wondering peoples opinion on the 11", I can't decide whether it is just too small or not, I'm a university student so portability is key for me, as I walk to and from there each day and previously had a 17" Asus laptop the difference in screen size and weight is astounding. I have a few questions about apples return policy and sort of how long I have before they won't let me exchange the laptop (UK Customer). I don't really see the point in upgrading to the 13" air, as I may as well get the rMBP if I'm going to go for the size and weight increase. I also don't particularly need the extra processing power from the rMBP. A bit torn really and some advice would be appreciated Cheers!