Only one I've sunk a good amount of time into is BO1. I couldn't stand MW3 and I just got BO2 recently, so I've only got about an hour played in it.
Can't look up my CoD4 K/D on Elite, which was my favorite CoD so far about BO1, but I think it's somewhere above 1.5. I'd like to get 10th prestige in that game, but there's too many hackers, so I just don't play. It's a shame.
Hey, everyone! This store discriminates against the poor!