I like westerns quite a bit and have seen many. "The Outlaw Josie Wales" is certainly one of my favorites. And, "The Good, the Bad, and the Ugly" is right up there.
But, don't overlook Silverado, Quigley Down Under (certainly a western style if not a true western ), or just about any Western that was done by Tom Selleck (I.E. The Sacketts), Wyatt Earp (Kevin Costner), Tombstone (Kurt Russel). The Magnificent Seven, 3:10 To Yuma, The Shootist, Hud.
If you also like western comedy, see Rustler's Raphsody (Tom Berringer), Frisco Kid (Wilder, Ford), Shanghai Noon, Lightnin Jack, Little Big Man.
Cheers,