I bought the WEP as a replacement for my Plantronics Voyager 510 which I had a couple of years (Which by the way performed great until I broke it by over twisting the mic piece) I bought two, one for me and one for my Girlfriend, only difference is she got a Red one. I have mine paired with a BlackBerry Pearl 8100.Other reviewers rave about the sound quality, my interpretation of this is the WEP200 is just flat out LOUD! I'm not sure if this is an issue with the circuitry in my BB or the WEP200, but even after turning the volume all the way down on both the device AND the phone, the amplification was still a bit overwhelming. It is particularly bothersome when talking to a another party who is located in a noisy environment. You will hear everything, road noise, kids, radio, etc....! My girlfriend loves hers (this is also her 1st bluetooth). Me? I don't think there is anything inherently wrong with the WEP200, it just didn't fit my taste. I think I may get another Plantronics or maybe try the Aliph Jawbone headset.