Go with the BB7 if you want a quick change out and new rotors.

Go with the Deore if you really honestly think you need hydraulic brakes on PAVEMENT. Hint: you don't need more than rim brakes! My v-brakes have worked to slow down from 50mph with knobbies and a 220lb me on top... So I would go with BB7 if I was you. I likely will, someday when I want to also build myself new wheels...So, when my rims wear out or bend.