I was considering this one from the Plantronics 520 and the Jawbone headset, finally decided to give this headset a shot because of its size and many options to charge. Reviews stated that it was a pretty good fit but you have to use the earhook or else it'll fall off. Sound quality in hearing others is really good but I've received many complaints on how I'm speaking really soft according to the caller on the other line.The ability to turn off the flashing LEDs at night is a plus because it is somewhat distracting. But the #1 most important thing for me is for other people to be able to hear me when I'm just talking at a normal volume and not having to raise my voice in order to be heard. Second most important is that I can hear others.I'm returning this headset to see if I can find a better headset with optimal call quality both ends, I'm going to see whether the Z9 will perform better.