I had the Medusa 5.1.
The sound isn't perfect if you compare it to a sennheiser of 200,-, but for gaming its perfect.
The micriphone is great, the surround effects arent perfect, but thats hard with a headset anyway.
Even after gaming 12 hrs, the headset doesnt annoy your head or ears (cuz some possible pressure of the construction or painful foam on the ear-shells).
I now use a Sennheiser and a stand alone microphone (http://www.amazon.com/Sennheiser-HD570-Traditional-Over-Ear-Headphones/dp/B00004SD88)
Its not Surround, but you dont really need.
If you can buy the Medusa, Do it. The moment I have money, I will buy one again.
Ps: try to buy one with normal stereo jacks, not USB. USB drains the power and slows down the pc. The onboard audiocard already uses energy, so why not use that?
Good luck M@$t€®