I always advocate a wider tire for more comfort, but that's a matter of choice. As a commuter, my focus in order of importance:
Flat protection -- you can't get anywhere quickly if you're on the sidewalk fixing a flat.
Comfort -- if you're serious about commuting you'll realize it's a marathon and not a sprint. Be comfortable while you're doing it 'cause you'll be doing it everyday. Every. Day.
Grip/wear -- you have to have faith in your tires. Lean into corners with confidence on tires that will last.
Price -- buy quality, cry once. Cheap tires are almost always false economy.
-Kedosto