+4 on the Schwalbe Ultremos, my definite fave. The Vittorias will give you an amazing ride, but they will not last very long. The Michelins will give you a very fast ride, but they will cut in 10 minutes. The Ultremos are extremely light, incredibly durable, one of the fastest rolling out there(just behind the Michelins), and also provicde a very comfy ride. Try them out, you won't be sorry.