I've got Mavic Open Pros on all of my bikes except my tourer, which has Velocity Dyads. They are solid, relatively light weight and durable but I will probably use something else for my next set of wheels. Mavic is moving away from rims and focusing more on selling boutique wheel sets, and I think their quality has begun to suffer. The last set of OPs that I bought had to be replaced because the eyelets started cracking and breaking after less than two years of use. Also, almost every set of OPs that I have owned eventually developed annoying clicking sounds that drive me crazy. For my next wheel set, I will probably use one of the DT Swiss rims or Velocity Aeroheads. The Velocity Dyads on my tourer are very durable and relatively light weight for a touring-capable rim, but much heavier than OPs.