I've only played the first black ops but its a brilliant game and in sure the new one is too. Personally id get both. The old one be cheap by now.
Black Ops 2. And here is the reason. In Black Ops 2 there is more things to do.
For example Zombies it isn't your normal zombies (survival mode) there is a campaign called Tranzit in which you take a bus to multiple stops, building machines, and fighting a boss! There is more for zombies. Next, the Campaign itself was really good!
It was really great that I got to make my own choices make custom classes for missions and the awesome near future technology (almost invisible suits). Lastly, the Multiplayer itself is cool for a couple weeks or so...but, I like it better than Black Ops 1 I'll tell you that. Also I recommend if you do buy Black Ops 1 buy it used it will be much cheaper!
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.