I absolutely love my Cosmic Carbone SL's for crits and non-climbing road races.
They are a rouleurs dream. They hold speed amazing well and are incredibly durable. I raced an entire season of crits on them and was never easy on them and they are as true as they day I got them. I'm 165-170lb fwiw. The hubs are also amazing.
That said they aren't a climbing wheelset.
Can't go wrong with Reynolds. I've got a dv46 rear and hopefully soon a 66 for the front, the rear has been great.