The Plantronics Voyager Pro UC has outstanding audio quality and noise cancelling, as does the Motorola Finiti. Not to mention, they both have a number of other useful features. I would recommend finding the best deal of one of these two headsets; they are the most impressive sets on the market.
Thank you. How much are they? I bought a Plantronics (forgot which one but it was the most popular one at Amazon.com) but since it was so small I lost both the charger and the Bluetooth.