I'm more a single player (story mode) fan and I really like the way its all put together (clearly Treyarch has played
Black at some point, because there are a
lot of similarities in the presentation). I prefer the SP content to MW2, but the final product doesn't seem (or look) quite as polished as MW2 (in my opinion). I would personally say its worth buying, but not at £45.
I still think the king of FPS (though maybe not to everyones taste) is Killzone 2 - can't wait for the third one next year!
NB: The "hidden" games in the Black Ops menu are pretty cool!
