Based on the positive reviews here and elsewhere, especially compared to the Jawbone, I went for this headset as my first foray into Bluetooth.I'll be returning it for one simple reason: The microphone volume is too low and you can't adjust it. Most of my calls are conference calls. If people can't hear me, which they can't with this headset nearly as well as with my wired headset or the phone handset, then it's useless.The sound quality of the speaker itself is great, but that offers little consolation.I spoke to Plantronics support and they recommended the Discovery 925, their new model with "Audio IQ", which increases your voice volume, but they said that it doesn't do as well with wind. The guy did admit that my voice volume was lower with that headset as compared to the phone handset.Not sure what's so hard about getting this right....