I have been through a few mono headsets including the jawbone until I washed it with my pants. I just picked up the Motorola Endeavor HX1 and I am thoroughly impressed!! It is the only bluetooth earpiece with a great bonemike. The stealth mode (bone mike mode) is almost good enough to use all the time but is not quite as clear as the normal mike mode. In extreme noise conditions, most recently at the Chicago airport inside and out and in very high noise and windy conditions the "stealth mode" shuts off the conventional mic completely and only uses the bone conduction mike and it works amazingly well.. better than the jawbone by a long shot. There is also some voice prompts and instructions to talk you through some of the features and it will also pair with multiple devices at the same time. Best I have used so far. I don't use the ear loop with mine and I haven't had a problem with keeping it in since it does go partly inside your ear canal in order to allow you to hear in high noise environments and also allow the bone mike to make good contact.
http://www.motorola.com/Consumers/US...avor-HX1-US-EN