Dude the answer is simple....
Point 1 : If you are more of an online gamer, then Razer Megladon may be the best option. Even the tiniest of movement can be heard clearly with its sound modulation box.
Point 2: If you are looking for something with mic , go for Razer Carcharius. Another masterpiece( i own it and its fkin awsome )
Point 3 : If you are a professional gamer and travel to LANs locally, nationally or internationally..then Steelseries Siberia V2 is the god. Pick any professional gamer from any gaming scene. You will find him using Steelseries Siberia
Point 4 : You missed out on another masterpiece.. MadCatz Triton(google it bro).
(available on ebay)
VERDICT: All the headsets mentioned are not much different from each other in terms of sound quality and preciseness. It just depends on your gaming stature, willingness to spend money and of course the brand name.
If you can shed a bit more cash..I strongly advise go for Madcatz triton..