I've used Mavics for years as well (the old silver SLs and the new SLR). I've weighed as much as 190 pounds and used these on a fully rigid singlespeed at one point. I never had a problem. These are pretty strong, light, fast wheels with a true UST rim that makes running tubeless as pain free as possible. They are a great option in my opinion.
I would hold off on the Crank bros until more real world experience comes in from the early adopters. They don't have remotely the level of expertise as Mavic in building wheels, so they may have some kinks to work out.