stupid question. i havnt played halo since 3 but i guarantee theres no such thing as a best weapon. ive seen rocket launchers fall to plasma pistols. know y? cuz the current player knew wut he was doing. u want my opinion? the best weapon has nothing to do with explosives or full auto. the best weapon requires skill and precision. not "spray n pray" and especially not "splash". anyone can unload a full clip or rocket just close enough. the best weapon is any weapon capable of taking down an oponent in less than 5 direct shots.