SOCOM: Combined Assault or 3?

Which one would you guys recommend?

http://www.gamespot.com/ps2/action/socomcombinedassault/index.html

http://www.gamespot.com/ps2/action/socom3/index.html

Is one better than the other? If so, why?

I am primarily interested in SP for now with MP being a possibility later on.

Thanks. :) 

your buying a socom for for for....singleplayer?. weirdWraithsLotus

Well both actually. I want to do SP first (and have it be decent).  

No. Get CA because its an expansion pack of 3 basically.michaelonbass

That sounds like a good idea.

Thanks. :) 

I say get CA because it's pretty much 3, but with a couple new maps on it.

If you want to learn glitches, see blood squirt from the neck when you kill your enemies, then get 3.