It's one of my favorite films of all time, I consider it something of a flawed masterpiece. It's a very depressing-but-beautiful movie that had a huge impact on me after the first time I watched it way back in 2007.
The film's score on its own, however, is utterly flawless.
My personal favorite of his would probably be High Plains Drifter. The whole film feels like The Man With No Name through the lens of a revenge ghost story. Such a great, haunting, and sometimes darkly funny film.
I don't know if "Treasure of the Sierra Madre" counts as a western. If it doesn't, then I pick "Dances with Wolves". I also want to recommend a modern western: "The Homesman" which came out last year. It should have been an Oscar contender IMO. Incredible acting by Swank and Jones. And what an unusual story.
Now, if you were going to ask what's the best non-Leone spaghetti western, I'd put up Sergio Sollima's The Big Gundown and Sergio Corbucci's The Great Silence.
these are good ones too. Another spaghetti that gets supremely overlooked is Tepepa. Tomas Milian as a crazy Mexican bandit in one of his most visceral parts is a total riot to watch
I don't know if "Treasure of the Sierra Madre" counts as a western. If it doesn't, then I pick "Dances with Wolves". I also want to recommend a modern western: "The Homesman" which came out last year. It should have been an Oscar contender IMO. Incredible acting by Swank and Jones. And what an unusual story.
If No Country for Old Men counts, hands down the greatest Western.
Outside of that, while most are listed. I really enjoyed Appaloosa. Could have shaved the runtime down. Bu Mortensen, Harris, Irons, and Henriksen in a western.