i have about ten different BT devices. always was told that on the other end they couldnt her me. i drive a jeep wrangler with 33' tires on the highway everyday. after i bought the jawbone ($45 on ebay) i called my fiance and she asked me where i was cause i should have been on my way to work and she could actually hear me. couldnt beleive i was in the car.
JAWBONE all the way. dont need to spend $120 or whatever it is now. search ebay and buy the chager from jawbone.com.