I'm going to make a sacrilegious statement in this thread.
Once Upon A Time in the West is actually a better movie than The Good, The Bad, and The Ugly. Charles Bronasan is perfect as Harmonica and Henry Fonda is amazing as the villain. Oh yeah.. and Jason Robards is great. Oh... and Claudia Cardinale is a vixen.
They are equal imo. But "The good The bad and The ugly" has something that "Once upon a time in the West" does not.