I think the Moto HS850 is still a top contender. Is is a very, very nice earpiece. To be honest, I despise Moto phones generally, but their BT headsets are top dog I think at least among the reasonably priced models. If you want the creme de la creme and are not price conscious you might get one of Nextlink Bluespoon Digitals. Pushing $300 but Ive read they are the best. Im pretty happy with the Moto HS850s though.
By the way, Ive bought several items from
www.blueheadsets.com and been completely satisfied.