I've been impressed with all the stuff from Sennheiser. Can clearly hear the quality loss of MP3 vs FLAC (lossless). Can't manage that on my stereo. Sadly that means you also easily pick up the poor audio in games; most of the music tends to be compressed.
Simply put: good mic, excellent audio. Little light on bass though, but that's what bass-boost is for.
Pretty basic design;
http://www.sennheiser.nl/nl/home_nl....-gaming_500926
*ah right, TrackClip Pro mounts to that just fine.