That's too tough of a choice to make, but given most of us grew up watching ES22, than we did Tony, being how far back it was.
I realized Tony was the more dynamic faster back but he split carries for this very reason, he had other backs on the team that blocked better, and they get The Dirty yardage better.. I'm not taking anything away from him,
but I got to go with the best three down back to ever play the game at least in my generation and that would be Emmitt Smith, the dude could block, short yardage, and yes, he broke enough big plays to be considered a threat ,maybe not house a bunch of touchdowns from a long distance, but the man also had longevity and health..
He almost never got hurt and how many years did he play? How many games did he miss? how often was he pulled for another back? there was almost no relief he was on the field almost a whole game.
By the way that's an advantage in my opinion to have a back on the field almost the whole game you never know what's coming when you substitute backs the big one for the smaller faster one or you give the backs too many breaks and other guys got to come in sometimes the defense can key on what you might be doing so when Smith was back there nobody knows what was coming and he could do it all...