I've tried several over 4 years and I've been using this Jawbone for about 2 months. So far so good. My first priority is good sound on both ends, and the Jawbone seems to accomplish that pretty well. I can use it in the car on the highway with the windows open and the person on the other end says they can't hear any wind noise, and I can still hear them. The good noise cancelling also comes in handy while talking and driving with noisy kids in the back seat or in a noisy public place. I think the Jawbone actually senses vibrations in your jawbone so it can distinguish your voice from unwanted background voices. It seems like pretty nice technology.And it is nicely comfortable for long hours of wear. I have used other BT headsets that start to hurt my ear after a few hours, but the Jawbone does not hurt. One complaint is that the fit isn't quite perfect. But I guess there are millions of different ear shapes, so one earpiece could not fit everyone perfectly. With the Jawbone, I find myself having to adjust and re-insert it fully into my ear every so often as it starts to fall out and sag on my ear. My only other complaint is that it is not easy to get on my ear quickly. With other earpieces I've used (particularly the ones with no ear hook), I would put them on quickly when my phone started to ring. This one takes me a few seconds of fumbling with my ear to get it on, so the call is lost. Maybe I just need more practice or need to experiment with the other earhooks and earbuds that come with it.