JB has the advantage of being able to show scouts that he can play with highly skilled players being at UNC.
JB is not the athletic PG that Westbrook or even Kris Dunn are so being a lotto pick is out the question, but if Marcus Paige who will be a PG in the NBA went 2nd round then I would say JB who was the starting PG over Paige would prolly be late 1st or early 2nd pick.
I see Chris Paul type when it come to Berry. Berry is a really good defender and IMHO will be an even better assist man this year.
If Berry can show a consistent jumper which I think he has, a 3:1 assist to turnover ratio he will be drafted and this will be his last year.
With Felton coming next year Berry almost has to leave. Felton is the real deal and could take Berry's spot or atleast his minutes if Berry returned (why risk chance of a freshman taking your minutes).