I currently use 700x25 slicks on my commuting bike, to get the easiest ride possible. I also own: 700x28 with some tread 700x35 metal studded snow tires (Purchased last year for UK snow) ...
I'm used to riding on a MTB, but since I've got a new road bike, I'm quite paranoid about the slick tyres. How good are they in wet weather? I'm scared of braking too hard, or even just turning!!