First I'll start on sound quality:
The headset has a wrap around plastic that goes over your ear and the speaker lines up perfectly into your ear when worn. The sound is just as good or better than my current Sony w850i phone. The sound quality is crystal clear. Also the listener on the other end can hear me perfectly. As a test we both were outside, little bit of wind, called each other and we both could hear perfectly clear. No distortion at all.
Range:
The range is great, and expected from any Bluetooth headset. I put the phone in my kitchen and walked a good 25-30 feet to the other end of the room and it was still crystal clear. I assume that would be around the maximum range for any headset operating on Bluetooth.
Comfort:
This is the first headset that I forgot it was on my ear. After a few hours of wearing it, I didn't feel it anymore and it didn't bother me one little bit. My friend is in agreement and often forgets he is wearing it as well.
The last time I have used a Plantronics audio device was when I had my Audio 90s headset, mainly used for CS. Comfort, I assume, is a top priority on Plantronics' list. Comfort, I think, is something a few companies forget about...
Looks:
Well it looks like any other headset. I wish it was full gloss black, but I guess I can't complain
All in all, I have no complaints about it. It pairs with the normal 0000 pair code and seems to work well with a few phones I tried.