Aurier is the best deal for a right back in the EPL, or in any league for that matter. I've never met anyone who doesn't like him. He has the rare combination of speed, to keep up with smaller quicker players i.e. sterling, musa, mane, and the strength to fight off monsters i.e. lukaku, Diego costa, Michail Antonio.
gets up on offense
keeps up with wingers
if you have A LOT of money Valencia is better