I have been a user of the lightspeed zulu for 3 years. Good headset except it is heavy on batteries, epsecially with BT use. But the most annoying and disappointing thing is that the fake leather covering the foam earpads and headboom flakes off and sticks to your ears and face,especially worse in the heat. these are not covered by the 5 year warranty. my DC headset after 10 years are still good.