I've owned so many different types of bluetooth headsets it's not funny. I've used Blueant, Motorola's, Sony's, you name it. I don't care what kind of special technology is in there, there is never any substitute for putting the microphone next to your mouth. Now combine the boom microphone with a really good noise cancellation, and you've got the perfect FUNCTIONING system.
I've used it most often on my bicycle (when i'm not wearing a helmet). I can ride in windy conditions and the person on the other end knows i'm on a bike only because i'm breathing hard. They don't hear the wind. Loud buses or traffic doesn't make a difference. I used it at the ROLLING THUNDER Harley rally here in DC. I swear I couldn't hear my own voice when i was talking, but the person on the other end hears me fine.
The buttons are very simple, and on/off/answer button, and an up and down volume buttons (total three buttons).
THE WORST PART is you look goofy. I'm embarassed walking into a supermarket wearing thing. NO, I'm NOT an aerobic instructor! On my bike, in my car, or in my house, I don't care, but out and about, I feel like a dork.
FUNCTION over FORM :)