Do you have experience to back up your conjecture?

My ring buddy's Bontrager rims cracked around the eyelets and had to be replaced. His seat post kept slipping too, and he replaced it with a carbon Cannondale. Besides that, no.

PEZ cycling just posted a glowing review of Bontranger:
http://www.pezcyclingnews.com/?pg=fu...69&status=True