It’s all subjective even the definition of great. Just wait and see who is presenting is my opinion. One thing I never do is walk out mid way if it’s not too my taste. To me that’s plain rude. I have only been disappointed once as I have mentioned before. I don’t see any point speculating who they could be. I have only once had a repeat speaker and that was the delightful Maureen Ryan. Would love to hear either Chris Frame or Steven Payne but never been lucky enough.