I have a MacBook Air 2012 13" i5/256/8gb. Bought it on November 2012. Amazing computer. I've had a Dell and HP 15" notebook before, but they both died on me 2-3 years down the line. I've been traveling since December, backpacking through Southeast Asia and South Asia. and one thing I notice is that the 11" MBA is probably the ultimate size and weight for traveling. With the 13", I do notice the weight on my pack/luggage with and without it. and sometimes I wish I had the 11". A part me of wants to switch to an 11" model by selling my current MBA, and maybe my first generation iPad mini with retina. But more than likely I'll be keeping them, because it looks like I'll only be able to get a total of $700 for both if I sell them. 800 if I'm lucky. One of the reasons why I went with the 13" is for the screen size, sd card reader, and the weight of the 13" was so much lighter compared to my previous Dell and HP notebooks. So I just wanted to share my experience for those who are deciding between an 11" or 13" when it comes to traveling. I would advice an 11" MBA if you're traveling, on the move a lot, and wants to pack as light as possible. I just love how compact and so unassumingly capable it is.