I thought BO2 multiplayer was great, the best since World at War. Don't even mention the awful zombies attempt though, the one with the stupid bus and the lava all over the floor.
Maybe the third one will be decent enough too. I don't usually bother with the series now, I only have the latest one because it came in my ps4 bundle.
Treyarch are my favourite publisher though out of the three so if I were to trust any of them to make a good game it would be them.