So here is my "Ultimate" MacBook Air 11.6" and my "Ultimate" 13.3" -- I have taken 6 photos of them side-by-side you can actually see the real life comparison in size when they are together. The 11.6" model is very tiny and compact, and the 13.3" model looks mammoth in size compared to the 11". I liked the 11.6" so much that I decided to get the 13.3" to take the place of my old MacBook Pro as my "full-size" laptop replacement! I got the 11.6" for true portability, but the 13.3" for the extra screen space, drive space, and horsepower when I need it (like doing photoshop, video editing, web design, or fullscreen gaming). The 13.3" is my full-size laptop now, and the 11.6" is my ultra-portable carry-anywhere laptop. Here are some great photos to compare the two for size. Enjoy: Enjoy!!