I will also add my two cents. I have been using viavoice since 2000. I was frustrated with the quality of the headsets that came with viavoice--both the analog one and the later USB one. The quality went from fair/good to excellent when I switched to an iparrot multimedia headset (this is a stereo headset too, and only costs around $35). Since I have an earlier G4 I don't need to use a USB converter.