Don't buy a headset. I've been there, done that, and learned my lesson. Just get a nice pair of headphones and a separate clip on mic (Zalman has a great one). I've used that Corsair headset, Turtle Beach X3's, and Astro A40's, and none of them come close to my Audio Technica ATH-M50/Zalman mic combo. Way cheaper this way, plus I've got a nice pair of all-purpose headphones instead of something I could only use for gaming.
Those Corsairs aren't even true surround by the way. False advertising. Plus they have no bass whatsoever. Complete junk.
Tell me the number of TRUE Surround sound headets compared to the amount of Virtual surround sound headsets