This was my first bluetooth headset and I have used for more than 8 months now. It is perfectly fit for me and I am satisfied with the quality of voice both ways.Pros:1. Very flexible and can fit as u like.2. Can be used on both ears3. Voice activated dialing works, so it is convenient to call someone while driving.4. Battery retains charge for quite long time, depending on your talk time.5. filter for air noise works. I tested it while driving on highway with open window. Caller confirmed very little air noise disturbance and great voice quality.Cons:1. Switch off little inconvenient to use when it is on your ear. But the flip side is that you would like to keep it on, while on your ear. So, not a problem.2. Some reviewers have mentioned, difficulty in positioning on ear due to flexibility. But it is not a big issue, since once positioned, it stays there.**-> The best thing I liked is the Customer Service from Plantronics. My first headset developed some problem with the microphone and people were not able to listen to me. I called Plantronics on a Sunday evening and the rep guided me through the online warranty form, very nicely and I got my replacement part within three days. Perfect..isn't it?