Need help choosing surround gaming headset

[BoneDigger]

Hi, I'm going to buy gaming headset and my budget is 250CAD$
I prefer open ear design and surround (5.1 or 7.1) is a must have.
I LOVE Sennheiser G4ME ONE but they are stereo and if wanted to buy separate audio card I think it would go beyond 250$.
I'm open for any suggestions, and btw I am in Edmonton AB.

 

[BoneDigger]

Anyone? Please guys I need the answer as soon as possible.