macbook

Many Universities require students to have laptops. Ha, look closely!

Image source: Live from Apple's "spotlight turns to notebooks" event

Source of image used in the animation: apple.com/macbook/gallery/qtvrblack.html.

The only reason i´d consider a notebook larger than 12-inch (or 13-inch) is because of a larger display. The advantage of portability to me outweights the benefit of a larger screen. Portability to me means being able to ride my bicycle and carrying with me my notebook light and small.