This is a question, so you should end it with a question mark, not an exclamation point.
Anyway, answer: I guess the Tiger I in 1942-43, in the Desert and in the cauldron of the Kursk campaign. The first true super-tank. A powerful tank in capable hands.
It's a hard question, though, because I am also fond of the M1 series, the Sherman series, the T55 series, and so on and so on. Maybe I just don't
have a favorite tank of all time.