I would rather go with Fox. He is definitely talented, somewhere between John Wall and Jah Morant, and he is young enough that maybe he can sand down some of the rough edges. If he improves his outside shot and running the offense/helping teammates get better, he’s an all-star.
On the other hand, if he doesn’t improve, he is another UK Pg with great athletic abilities who can’t figure out the mental part of the game (Wall, Bledsoe, Brandon Knight).
With Simmons, he is definitely talented, but his weaknesses are calcified and permanent. The market’s reaction to his availability indicates this.
I think he will become Draymond Green with a better handle. Very Valuable, but not a top two or three guy on a good/ great team.