After many, many complaints about the sound quality on my Jabra 250 (esp. in car), I bought the BT800.The features like ring tones. menu, etc are all very nice, but the basic needs need to be met first.Comfort (or, rather lack of)It is all solid plastic (no flexibilty anywhere) and is thus really uncomfortable. I could barely wear it for more than an hour. I'm sure I could have got used to it, but the big problem was the sound.Sound QualityPeople I regularly spoke to on my cell phone said it was "different" in comparison to BT250. Not one person said it was "better" or "clearer" and some people said I sounded "muffled".Bottom LineI returned it and got the Gennum nxZen Plus. It cost 50% more, but the sound seems to be a lot better. It's very comfortable to wear: it has two different size ear hooks and 4 ear plugs that go in the ear (like the 250). I'm having problems getting the equalizer software to work, but so far (a few days), I'm happy.