If he has the chin as a pro its pretty simply IMO, Rau'Shee Warren. THis guy is as fast as anyone, he has excellent skills, and a really good power. BUt unlike guys like Gamboa who is a good athlete, he also has great technical skill

http://www.youtube.com/watch?v=_XMJxeB_x_s

To note he almost beat Guillermo Rigondeaux who is considered the best amateur fighter in the past 10 years probably if not ever.