I love the story, and have so much fun playing the campaigns on co-op with one of my best mates. Although the first Halo game is the best, there has not been a bad game in the main series (the main series being CE, 2 and 3...ODST was good, Reach was ok, and Wars was decidedly "meh"). Call of Duty was best when it was set in the World Wars, and I get the feeling that it's a tired old thing now.
(This post was edited by Spencissimus on Dec 23 2011, 3:47am)
I don't play either one of these games. I used to play COD, up until it became a modern warfare game....I really preferred the WWII campaigns, so because I did play the crap out of the earlier versions, I picked the COD option.