Hardware Pacers has posted a review on the Logitech Stereo USB Headsets 300 & 200. Here's a byte:

Logitech is always famous for best keyboards and mice, however that is not the only thing they are good at. Logitech released two new digital headset series, Premium USB Headset 300 and Stereo USB Headset 200. While the Headset 300 features inline volume controls and Headset 200 features adjustable headband.