When I got my first Plantronics Voyager Pro I few years back I fell in love. It was a super comfy Bluetooth headset that simply worked and the battery lasted forever. Plantronics then gave it a marginal update with the Voyager Pro+ with A2DP and a voice controls. Now they have tuned the mix just a little bit more with the Voyager Pro HD.
The Voyager Pro HD adds a slick Smart Sensor technology that recognizes when you place it on your ear. It will automatically answer calls or transfer calls back and forth between your phone and headset based on this sensor. They also have their Vocalyst voice and text service on command and a few other tricks.