I like Maynard's chances against Penn. Maynard showed against Edgar how much he's improved his striking and he presents a Matt Hughes type challenge for Penn. The guys who have beaten Penn have taken him down, beaten him on the ground, and immobilized his BJJ. I think Maynard has the best shot right now. I don't think Edgar can hold BJ down if he gets a takedown.
Obviously, I think Maynard is the worst possible opponent for Diaz, who has trouble getting to his feet with strong wrestlers on him.