I must say, my favorite thing about this headset was the answer/end call button. This worked perfectly with my phone and I quickly grew very used to being able to connect, disconnect and do voice dials without having to fumble for my phone or take my eyes off the road to press a button or dial a number.The sound quality is good - I could always hear the person on the other end just fine. There were a few people who consistently complained that this headset generated a lot of static (I couldn't hear anything) for them (there was no static talking directly into the handset) but most had no problems.The 2 biggest problems I have with this are that it is a real task to put on and take off, especially when driving.Moreover, it is not the most comfortable of headsets. It is fine for the first 10 minutes or so, but it really starts feeling uncomfortable after that. This is fine if you only wear the headst for the duration of a single call then remove it. However, if you are like me who puts on the headset, then wants to leave it on for the duration of the car ride, this really does not work.