I always do research before I purchase something.  I read about the problem with the fit and keeping the ear piece in your ear.  I also read about how great the sound was.  I read the reviews on cnet.com as well as here on Amazon.  Well, the reviews were correct.  The sound was terrific.  The ability to keep it on my ear was the problem.  I even bought the jabra eargels that were recommended in a cnet.com review.  They didn't work.  It was so frustrating that I finally returned the jawbone.  To much of a problem trying to figure out how to keep the jawbone on my ear.  After I returned it, I purchased the blueant z9.  Wonderful earpiece.  Easy to wear and terrific sound!  I highly recommend this headset (blueant z9)!