Defensively Ithink Simmons could be a top 3 defender. Offensively I don't like his game that much outside of transition. Ball dominate, no shooting, don't see him being able to play with a it's big ala LeBron. If he showed even a whisper of a salvageable jumper he'd be the no brainer #1.
Ingram on the other hand is very well rounded IMO. Good shooter, passer, length to develop into a good defender, even his weight isn't scary since he shown his frame can add and keep weight (added 23 pounds this year and has wide shoulders). Problem with him in regards to Simmons is he has nothing that he's great at right now like Simmons. But he has tremendous potential