I didn't like cod4's promod mostly because when I went on pubs and owned some retards, they were all like OMFSGSIOEJGIOAEGJPIAEGJP IF WE 1V1 PROMOD I SURE KILL YOU NOOOOOOOB.

Other than that, for me it's
singleplayer wise:
MW2>MW1>CoD1>Black Ops>CoD2=MW3. Didn't play WaW and anything past MW3.
multiplayer wise:
MW2 >> MW1 = CoD1 > MW3 > Black Ops. Unfortunately didn't play CoD2 multi. Also didn't play WaW and past MW3.

tl;dr MW2 is the masterpiece call of duty, the absolute peak of the series that I doubt will be reached ever again.


Oh and I already mentioned it on irc but I'd so fucking love wolfenstein ET remake or shit, or at least it becoming popular again