I recently purchased a pair of these from my local pc shop, and I must say I thought they looked great. At the top of the headset is a little cushion for when you sit them on your head, so it doesn't irritate after a long amount of time, and the earpieces them selves are well cushioned making the experience much more comfortable.
As for the sound, there very clear and have a great amount of bass for the size! The slight disadvantage with these headphones is if you like your music pretty loud, or whatever your listening to pretty loud, well then its pretty bad for leaking sound out i.e. if your in a fairly large room, and your listening to your music pretty loud, well the people around you in the room can hear it too, so that can get a little irritating after a while.
Overall, a very nice stylish, comfy and nice sounding headset. This is what you would expect from Sennheiser.
Other reccomendations: Plantronics Skype-ready Audio 90 Hi-fiPC Headset
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Left: 2 x 6 pin mini-DIN (PS/2 style) - female, 1 x 4 PIN USB Type A - male - Right: 1 x 4 PIN USB Type A - male, 2 x 6 pin mini-DIN (PS/2 style) - female, 1 x 6 pin mini-DIN (PS/2 style) - female