wow im dumb, i just glanced at the bottom choice of "they both ****" and i read they both "sick." i like both, when i get bored of one i switch to the other. if i had to pick cod4>halo3
for halo you have to have played the games halo 1, and 2 to understand whats going on. Where as with Call of Duty 4 you can start it up and it`s like a movie you play. Plus the story for Cod 4 was awesome. i love the ending