I wanted to pick up a bluetooth headset from quite some time and finally decided on the plantronics voyager 510. Pretty solid headset. Good sound clarity. I havent tested the distance though. I got disconnected a couple of times but that is not a big issue as my call durations last for quite sometime. Pretty good talk time and standby time as well. I could not get it to connect to my friend's nokia 2310. The nokia wouldn't discover it at all. I don'tknow what the reason is. But it has not given me any problems as such. The only problem is it is little big for a bluetooth headset. Could have been smaller.