Not to sound elitist but I and other headphone enthuists mostly agree that surround sound headphones are absolutely terrible. A decent stereo headphone will blow any of these 6 speaker headphones out of the water with better clarity, positioning and soundstage.
An excellent thread addressing this issue is right here:
Gaming Headphones for $100 (Surround)
I apologize for crapping on your thread but the majority of people including review sites do not have the proper knowledge or experience with headphones and give terrible recommendations. The part I wince the hardest at is the $129 dollar cost of these cans, even with the macro buttons on the side I doubt you would use them much anyways.
The bottom line for the money, stereo headphones > surround headphones.