Stereo headset
I did a lot of looking around before I bought my headset, and in the end chose the Plantronics Pulsar 590a. It kicks ass! It comes with a REALLY nice case, a headphone jack bluetooth transmitter (for your cassette walkman), an extra microphone extention arm, an inflight cable for use without Bluetooth, a wall and USB charger and a nice desktop stand.
Performance with the Prophet is great. If I'm listening to music and a call comes in, it switches over to Hands-free mode and I can touch the phone button on the earpiece to answer. After the call is over, the music comes back automatically. The earpiece remote also allows for voice-dail, switching tracks and mute/volume adjustment.
I did manage to fry mine by trying to charge it with the USB charger cable plugged into a car cigarette lighter style USB adapter. After that they would no longer charge. I didn't want to deal with the company I bought them from, so I called Plantronics direct. They wanted a scanned copy of the recipt, and when I sent it, I recieved an answer which said that a new unit has been shipped, and to please dispose of the old one. 2 days later I had my new headphones! Now that's service!
The only other complaint that I have with the product is the blue light on the earpiece. It kind of draws a lot of attention, but I love them! Best headset I ever owned!