Is shogun 2 with soldiers with firearms and stuff? If so, it's not for me :/
So crusader II is good! That one I might try :>
For CKII, I suggest looking up some videos to see if you might like it.
Shogun 2 is
It plays like any game of the Total War series.
It also has a turnbased campaign map where you move your armies around and manage your cities. It has some units with firearms in it, but that's mainly for later-turn campaign games.