This year is close. Marquez-Katsidis was fucken excellent, fought at an extremely high skill level. Same with Marquez-Lopez but I just prefer Katsidis-Marquez. Perez-Mares was unforgettable, that is a very strong sleeper candidate but I think still that the constant sways in momentum in the Escalante-Roman bout trump all. Neither fighter had control of that fight for more then a couple minutes at a time. That's what makes a fight truly special.