I use 32mm Continental Grand Prix 4 Season tires on my commuter/hybrid. I really trust them; I had only one flat last year with these tires, they are durable, and they handle the road's diverse conditions well.
I use 28mm Continental Grand Prix 5000 tires on my road bike. The ride is very slightly rougher. They are nice, fast tires.
For a commuter I wouldn't hesitate to put 32mm GP4Season tires on again.