I find Black Ops to be extremely fun, with or without friends. I just have to play Domination and I'll be into it, don't care what system I'm playing on or even if my only weapon is the M16 with an ACOG scope. I love the M16 and Commando anyway :3
I read your comment about MW2 quickscoping and other PS3 games, I gotta say it's better on BO than MW1 or MW2. Are there even lobbies on MW1 anymore? xD