I currently have Mavic CXP22/Cannodale C3 hubs on my Cannodale Carbon Six. They have been bombproof. I want use the new wheels for training and triathlons. I'm looking at new Easton EA50SLs or used Mavic Elites. Would the Eastons be much of an upgrade? Or should I look at the EA70s? Thoughts? A tri-bike is maybe next season.