You definitley don't want the Sirrus, it does not look like it will mount fenders with those brakes.

edit: on a closer look it seems to have eyelets for racks

How serious are the trails you're riding? If you need the suspension and knobbies you will pay the price for that on pavement for your commute. You can ride hard earth/crushed gravel just fine with just 38 slicks (80 psi).