I've had my Jawbone for a little over a month, I think it works great. I use it mostly when I'm driving, it helps with blocking out road noise when I'm driving at highway speeds. Allowing me to hear my caller better and let's my caller hear me.I also think it helps with voice dialing while driving, the other Bluetooth device I used wasn't condusive to voice dailing while driving.Comfort and Fit - To me the Jawbone is very comfortable to wear. The device I used to use never fit right. It always seemed like it was ready to fall off. I don't get that feeling with the Jawbone.Overall I really like the Jawbone and recommend it to anyone looking to get or replace a Bluetooth Headset.