It's the first one I've ever used but I read these reviews carefully. The battery doesn't last long, maybe because of the noise cancelling but also because I've got it turned up almost all the way, because its volume more than makes up for the low volume of my Cingular 8125 PC/phone. Volume controls are intuitive -- figured them out w/o reading the manual. Took me 2 tries to sync the Bluetooth but it was my fault and 2nd time worked flawlessly. Hangs on my ear OK -- doesn't feel 100% secure but hasn't fallen off yet. Would be nice if they made a little case for it that doesn't hold the button down and discharge it. Right now I just have it stashed in a little bubble-wrap envelope. TIP: if you use it for voice-activated dialing, record the voice tag using this rather than directly into your phone; seems like it recognizes the voice tags better that way.