I puchased a Plantronics 665 and it was horrible for the person on the other end. Lots of noise. I tried talking with several people and they all complained. I sent it back and exchanged for a JawBone. The JawBone bluetoothe is amazing. People do not complain at all. Everyone says I sound really clear. I even have my radio on and the road noise in my car is loud. I would recommend this Bluetooth as #1 to anyone that talks on a cell phone while driving.