Best by far!
there's just so much depth and tons and tons of little easter eggs strewn throughout the game, the different camos and face paints are well implemented and the enemy AI is spot on.
the story and graphics are great with some top notch scenes, the game also has some of the funniest Codec conversations ever.
i loved the game so much i've played through and completed it 8 times lol, and unlocked all the secret weapons, camo, pace paints and stealth camo. unlocking everything your first time through isn't very likely so that alone keeps you coming back for more, not forgetting the amazing gameplay.