These have been above and beyond my expectations for a headset. It integrates amazingly with my Xbox LIVE chat feature, as well as having great audio quality.
+Very high sound quality and the simulated surround sound is surprisingly accurate
+Easy to connect to XBox LIVE for in-game and party chat features
+Adjustable input/voice volume balance
+Detachable microphone boom
-The mass of wires with the MixAmp is a little unwieldy, but with the newly released wireless MixAmp, I'm sure this will be helped a lot.