Any thoughts on Spinergy wheels for cyclocross? Their Web site indicates that the Stealth PBO is appropriate. But I weigh 230 and don't baby my bike, so I wouldn't normally ride 16/20-spoke wheels anywhere, much less on a trail. Maybe us fat guys should stick with the Open Pros, but I'm hoping to find a light, realtively bomb-proof option at less money than the Zipp 404 Clydesdale/Cross.