Here is few great headsets for gaming.
http://en-de.sennheiser.com/gamer-headset-hifi-sound-noise-cancelling-microphone-pc-360 ( One of the best gaming headsets )
http://en-de.sennheiser.com/gaming-headset-stereo-pc-320
http://en-de.sennheiser.com/gaming-headset-g4me-one ( Best Gaming Headset...