Originally Posted by Mike F

I have a pair of the Rouleur's. I got them about a month ago and they have been great so far. I great value for the price. The spokes on the Vitesse are "aero" spokes and the wheelset weight is a tad lighter. Hard to say which ones are more compatible with S-30's. I think both are very similar but the Vitesse is lighter. I believe Williams have ceramic hubs.