Yes, I also think that Civ 3 is the best. But I also love Civ 1, Civ 2 and AC.
Tried playing CTP a few times, but could not stand it. Only good thing about CTP was that I borrowed it from a friend and did not have to waste any money on it. After a few days I just returned the game to him and forgot about it.
Edit: Forgot to mention Colonization. I tremendously enjoyed building up my colony and when finally everything was running smoothly, there was a short and boring revolutionary war and the game was over... That was really annoying. Good game otherwise.