Both of them would have to agree to sign with us for the MLE. I don't think both of them would do that, especially Miller. I could see Nash coming for cheap because of D'antoni and NYC.
But if we're in a situation where we have to choose, I would go with Nash. He's familiar with the system, he's a better passer and shooter. He makes the players around him better, and I think he's just better overall than Miller. Plus, him coming here might get other free agents to come here.