These things are so great but, not perfect.  The sound is fine, the range is pretty impressive.  They are simple to use and do the job.  I really love having them and would recommend them (and have) to others.  The only issue is comfort.  They are hard plastic and hold on a little too snug.  That's not to say there's anything better out there, I just wish Motorola would have put a little more thought into comfort.  *note: I where them almost all day at work.