College to pros or pros to college?

It was just reported that John Beilein is going to coach in the pros. He certainly has earned the right to have a shot at it, even though I would think he is much better suited to coach in college. Anyway, it raises the question as to which direction of movement works best. I don't follow the NBA, so I could not comment on that, but the college coaches I have seen come to the college ranks have been a mixed bag at best. In the first place, one wonders if their hearts are really in it, especially since they have to take on the unpleasant duty of recruiting.