It all depends on what you like to do in a fps game. In bf3 you have to slowly ace through and have to play strategically. BF3 is also more independent.
You would usually play Bf3 alone. Compared to MW3. MW3 is a faced paced game and requires faster reactions and is also more of run and gun game.
Also it depends on what console your getting it on. If you get MW3 on PC the weapons in the game seem more equalized compared to PS3 and Xbox. Also you have o take into consideration BF3 is built for PC then transferred over to consoles.
And MW3 is taken from console to pc. SO generally BF3 is better on PC and MW is better on console. Also one other thing never get Black ops its the worst game you could buy.
Literal my fish is more interesting to watch then to play blackops. But don t get me wrong Blackops was the game to make the cod series move on with new features. It basically since MW3 its waste of your money investing in black since mw3 is a more perfected version of blackops.
I have seen Modern Warfare 3, it is BAD. Its an EXACT copy of Modern Warfare 2. No changes.
I don't really like Battlefield 3 so I suggest Black Ops.
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.