I've been running Mavic A719's on the rear since 260 pounds. Its never needed to be trued, crashed twice, and bunny hopped onto a rail tie.
Bombproof 32 spoke with a decent 105 hub. I run a 20 spoke Ritchie Deep in the front for an aero advantage
http://www.evanscycles.com/product.j...t2?style=11299