I bought two since they were so cheap. Aggregate Amazon.com review score is 4 stars, which is pretty good. I have a Plantronics 510 and it is excellent and that one runs around $50 bucks on Amazon with 4.5 average rating. I'll use the 330 at home and leave the 510 in the car. Plantronics customer service is excellent. I had a problem with my first one and they immediately sent me a brand new one. Didn't even ask how old it was, even though it was only a week old.