VXI BlueParrott S450-XT

Long battery life. Wired and wireless options. Excellent outbound noise cancellation.

Bass-heavy at the expense of midrange. Bluetooth quality isn't great if connected phone isn't out in the open.

The S450-XT and the Plantronics Voyager Focus UC both have a very specific market: people who want stereo music, but also need crystal clear call quality in a range of environments. For those folks, a standard mono Bluetooth headset or a pair of stereo...