[Dam8610]

As Colts:

1) Edgerrin James
2) Eric Dickerson
3) Jonathan Taylor
4) Marshall Faulk

Whole career:
1) Eric Dickerson
2) Marshall Faulk
3) Edgerrin James
4) Jonathan Taylor (still has several good prime years to change this)

In a world of no injuries:
1) Edgerrin James
2) Marshall Faulk
3) Eric Dickerson
4) Jonathan Taylor

I felt the need for that last category because 1999-2000 Edgerrin James was the best RB I ever saw play regardless of era or role. That version of Edge was a threat to score a TD on every carry, had elite vision and patience (which were the traits that carried him as a RB after his ACL tear), ran routes and had hands like a WR in the passing game, and was an elite pass protector. It took several years after the ACL tear for Edge to fall behind Jim Brown for average yards from scrimmage per game. Had he never gotten hurt, I believe he would've been the best RB to ever play the game.