Im more of a fan of CoD for the gameplay. It's much faster and realistic. As Justin stated, you need a little more talent than just "jump, jump, fire, jump, fire, jump, melee." Throw a grenade in there for good measure too. However, I like to follow the story line of Halo. You also get all of the H3 expansion map packs with ODST. Just in case you didn't purchase them already.