I'll post the same thing I did in an earlier thread.
Assuming you're just looking for a day to day pack.
I'm a massive fan of Dakine, and have about 5+ Dakine bags.
My favourite is the Burnside:
http://www.dakine.com/p/skate/packs/burnside
Instead of a zipper, it's a drawstring, and I find it's so much easier to pack up and close, since you don't have to fight with any zippers. This can be ideal, since your zippers have quit on you.
There's two side pockets, and a flap pocket up top. 28 L, fits a lot of stuff.
Reasonable price, and Dakine comes with a lifetime warranty.
You have many colour options too, I chose the red