bandolier is the way to go!!!!!
in s1, i believe that it is a must-have if you're gonna go around, and kill people without dying.
its a bummer to run out of ammo in s1, then go to pick up a fallen weapon, then get killed.
stopping power, slieght of hand, steady aim, and extreme conditioning is the next best perks.
don't forget UAV jammer and dead slience!