Which backpack should i get for college?

Timbuk2 has a few different backpacks that are designed for cycling with, a href="http://www.timbuk2.com/tb2/products/backpacks/." rel="nofollow"http://www.timbuk2.com/tb2/products/back…/a I just bought a messenger bag from them and I'm very happy with the quality, I did get the laptop compartment and it cushions really well.