I dunno but I had the best surround experience with Left 4 Dead especially. The positional sound was extremely accurate and it was easy to kill zombies hiding behind trees or another side of the wall, too bad it got too repetitive for me. Was funny walking up a corridor, hearing boomer camping in a room further ahead just waiting for the players to pass, I just shoot it through the wall before going past the room. :p I don't use dolby headphone though (and neither CMSS3D).
CoD Black Ops is one game I've had probs getting clear surround sound with though.
Edited by RPGWiZaRD - 3/7/11 at 1:38am