This headset does not deserve its high rating. For 2 years I've also thought that it's been a great set, but I forgot it at home recently while charging it and found out otherwise. "Are you calling from home today? You sound so much more clear than usual." (I was holding my Blackberry up to my ear without using the 510.) Needless to say, I'm searching for a replacement for my tired 510. Do yourself and your other party a favor: test with/without the 510 engaged. You'll probably find that your beloved headset sounds wonderful to you, but doesn't get the job done outgoing.