This is the most perfect western I've ever seen. But then again, Leone is who made me fall in love with the genre in the first place.
I was surprised you didn't put Once upon a time in the west on the list, but I'm glad you mentioned it at least. Everyone should see that film at least once. And its score is just like...umm... mamma mia!
Ok, I shut up now and go and rewatch Tombstone. because I was planning on it for a while.