Honestly I like it. I did not play singleplayer at all, just multiplayer and zomboe mode but so far so god. Its a COD after all. Fast paced and you don't have to put too much attention to it like BF3. Its a very fun time killer. I did not really come across any problems in multiplayer but I heard singleplayer is buggy and the AI sux but hardly people purchase this game for singleplayer.
But I am not sure if it is $60 worth of good for everyone so that's why I can not recommend it. I am also NOT saying don't buy it.
For me I know that I will milk that $60 soon enough. Only game I am playing lately as BF3 although great, I need a break from it at times and this game serves the purpose very well.