Ive never played call of duty, so I guess I can't vote, but Halo 3 is a lot of fun. Infection gametype is a great tool for running simulated zombie experiences. I encourage eveyone to use it when preparing for the inevitable.
I recently got addicted to Cod4 again ;-;
Havent played it in a lonnnnnnng time because of gta4 but going for a golden draganouv now :D
Getting pretty close.
Havent played Halo 3 for lack of Xboxes and lack of munnys to spend on Xboxes, but I had the original on PC and it was pretty fun >.>