Some of those stretched the definition of Western, but it is a good list.
Of course the best Westerns aren't currently running on Netflix.
Obviously Deadwood, should be near the top of anyone's list.
Silverado is one of my all time favorites.
Tombstone, best Wyatt Earp, sorry Costner doesn't cut it and Val Kilmer is my huckleberry.
Pretty much anything with Eastwood is a safe bet.
The original True Grit is fantastic and I also really loved the remake with Jeff Bridges.
Oh and if you want something a littler different, I highly recommend Sunset, starring Bruce Willis as Tom Mix and James Garner as Wyatt Earp, book was very good as well. Earp comes to Hollywood to consult on a Tom Mix film and something nefarious is afoot.
There are a ton of others, but these are the ones that come to mind when I am thinking Western.
"If life were fair, we'd all live in cardboard boxes." - HuntGod
I can't believe you didn't mention THE best western ever made, "Once Upon A Time In The West."
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“One thing you who had secure or happy childhoods should understand about those of us who did not. We who control our feelings, who avoid conflicts at all costs, or seem to seek them. Who are hypersensitive, self-critical, compulsive, workaholic, and above all survivors. We are not that way from perversity, and we cannot just relax and let it go. We’ve learned to cope in ways you never had to.” -- Piers Anthony