Pros: easy to use, relatively small
Cons: looks dorky, might lose it
I would probably give any wireless headset one star for "style" unless it just looked like my ear (now THERE'S a business)...I just feel weird walking around with it attached to my ear, but with the new law in CA requiring them in the car, I'm happy to have it.
Once I got it connected to my phone (which was very easy), the one-button functionality was a snap. I wore it commuting to and from meetings about 45 minutes each way, and when I received calls, I could just tap the button and be ready to go. Also, it's very easy to turn on and off, which I think is important because I would really hate to have it in my pocket, try to answer a call and end up not hearing the person because the call is on my headset in my pocket. So I think I'll just keep it off, but handy in my backpack most of the time.
I also need to fidget with the various ear-shaped attachments they provide because it's not the most snug fit. All in all, I don't know if I would ask for much more...