First of all, I love the idea of a cordless headset and I have a Motorola phone so I thought getting a Motorola bluetooth headset would give me the best sound quality. I think that the HS850 is a nice design but has flaws the actual ear piece would do better if it sat just inside the ear (Like an earbud) the way it is now sitting just up against the ear makes it difficult to hear your party. More times than not you have to press it against your ear. I also think that the users voice comes out a bit muffled and people complain that they can't really hear you. Lastly this headset needs improvement it terms of cancelling out wind noise. I look forward to future models addressing these issues. All in All I mostly enjoy this device even with the flaws.