Don't you think there must be something to Bush if everyone is saying that he has the potential to be one of the greatest? Not just USC fans or other fans in general, but people who really know football (former players, scouts, coaches) everyone is saying that he is going to be a highly productive professional player. I haven't heard any experts say that he will not succeed because he can't run inside. I also don't believe that he will never be able to run inside. He has improved every single year and is really working on his inside running.
Davis is a good serviceable back, but are you telling me that if you had the choice between Dominack Davis and Reggie Bush you would pick Dominack Davis? I know it would be a lot of money at one position, but if you think of it as him playing multiple positions you are spreading the hit across the board. Let's say he makes about $8 million a year (which i don't think he will). You could say that $4 million is for RB, $3 million is for WR, and $1 million is for PR.