This is the 2nd HS850 I own. I always kept the first one I owned in the car and decided I wanted to keep one in the house also.  So I bought the H700 (the newer, smaller unit from Motorola).  I figured since I liked my HS850, I would "upgrade" to the H700.  What a mistake!!  I gave that one away and bought myself a 2nd HS850.  I find this unit is so much more comfotable and just works so much nicer than the newer version.  Bottom line, I own 2 of these and LOVE them both.