zoofs
bless
black ops 2 was the worst cod so far, the zombies redeemed it somewhat but the online/actual game was terribleI've played MW1-BLOPS2, and BLOPS2 is my favorite.
MW2 had great maps, but some of the guns were unbalanced.
MW3 was okay.
I guess it all depends on how you play.
I usually play cod in a more CQ, tactical way with Shotguns and revolvers(and in BLOPSII's case, a shotgun revolver. And also in Ghost's case, a revolver shotgun), and speed and awareness perks. Riot shields too. BLOPSII really catered to me.
mw3 was bad too.. black ops 1 and all previous were good