What is the point of this thread? You could make this exact same thread about any magic creator, teacher or figure.
Also, it just depends on what you would like to learn. When it comes to sleights I wouldn't trust anyone better than Jason, he has extensive knowledge behind the history and the techniques of each move. Plus he is a really strong critic, so I think he would encourage an incredible degree and rate of improvement for his students.
I am more of a close-up performer than a table worker, but that doesn't mean I would jump at the opportunity to learn something from him or anyone I respect in this art form.