i really love the multiplayer in this game. I got to level 25 before I realised you could edit your killstreak rewards, and that just made it all the better. The Harriers are fucking awesome. It really does seem like they've tried to overcome every single little complaint that people had about COD4, for example the fact that if you have a helicopter you can't use because there is already one in the air, it goes into a queue and puts it up for you when it can so you can carry on playing and not just lie somewhere frantically tapping the d-pad. And having all the different aerial attacks is great.
It's gonna take forever to progress through all the prestiges too. I've been playing for about 8 hours in total and I'm up to level 34, which is a lot better than some people have done who've been playing for the same time as me, so considering that it takes longer to be promoted the higher you go, and there are 70 levels, I reckon it's gonna need minimum 24 hours playing time per prestige. And who knows how many prestiges there are this time around.
And as for the single player, I loved the 'controversial' scene, and tried to blow away as many people as possible. But I'm a bit fucked up. The story is great so far too, really absorbing, but I can only play for a while before the call of multiplayer draws me back ha.