I've ridden on Mavic open CD with Ultegra hub. Pretty nice.
Also rode with Mavic CXP-30?? with Campy hub. Pretty nice.

Currently, I ride with Xero XR-1 wheel and hub. Very nice cause it was really cheap. My BIL use it for all around training cause he doesn't care about the wear and tear at that price. It's also very dependable and very rugged. Unless you are racing why switch it out. 2-1/2 years of riding. But, how many miles have you logged? My ultegra hubbed wheels lasted more than 10,000 miles.

Oh my other bike have Rolf Prima echelon and love that too. Both bike uses Michellin Pro Race tires.

Stay with a rugged all round wheel. Don't go for the lightest wheels unless you plan to race seriously.