M2TW in my opinion. NTW is useless.
Rome: Total War, first TW I played, the best they ever made
RTW for me too, I just LOVE the time frame
MTW2 with SS - awesome game made mindblowing.
RTW was awesome but NTW has blown me away
MTW1 viking invasion, it just blew everything else at its time out of the water and was really fun to play
NTW for sure
I like the idea of the small cities in ETW and NTW but in general I like RTW and MTW2 more.
RTW! Although M2TW is great and Empire is okay, Empire has HORRIBLE graphics, the men move like robots, and the factions seem to be clones of each other (at least unit wise).
Well, I love them all but my most favorite would be RTW and M2TW!