Turtle beaches are awful, don't get them. If you want a surround sound headset, get a cheap sound card that can simulate surround sound with headphones and get some really good headphones.
I've tried actual surround sound headphones like the one you linked to before, they don't sound spaced out at all and there isn't much difference in sound between the front and rear speakers. Surround visualization is way better, unless you get an actual 5.1 speaker system.