Dicussion time. What mode do you prefer? The limited yet challenging Online way or the complete yet predictable Single Player stuff?

I prefer SP as there's nothing better than controlling all of Europe man! And for some strange reason online RTTs can be very vulgar...

Though I can't fully support my opinion for MWII, I've never been online for it, so I don't know what the lobby is like, nor what modes there are so could someone enlighten me?