So far I have not found anything that even comes close to the
Motorola HX1.
It has a bone mike - absolutely the best noise cancelling technology. when enabled the normal noise cancelling mike is turned off and only the bone mike will pick up the vibrations from your inner ear whenever you speak. No other sounds will be picked up at all.
It is light weight -
It has an extremely long battery life - I can go several days of regular use before it even suggests that it needs charging
It has voice prompts to tell you what is going on -
It is $69 at Costco -