Counter-strike makes sense for a game where 5.1 surround sound would help, since a lot of it is listening for enemy footsteps, especially in maps like CS_Office. With 5.1 surround sound, I'd assume this would make it easier to figure out where the footsteps are coming from.
As for call of duty and other similar games, I actually find that sound is kind of unimportant. I play very well with no sound at all in those games.
As for call of duty and other similar games, I actually find that sound is kind of unimportant. I play very well with no sound at all in those games.