My Dad was a Louis L'Amour addict, and as such I have read almost everything he ever wrote. I also wasn't a terribly big fan of the haunted mesa (thought it was a little silly), but Jubal Sackett is a classic. Last of the Breed is only okay, until the end, when the main character sends his enemy a scalp in a box. Awesome. Pretty much all of the Sackett stuff is great, and there's very little in L'Amour that you can't enjoy, even if it's not terribly deep.
Of the non-western stuff, some of the stuff he wrote about Private Detectives and boxing is also pretty good.
To me, all of his books read like a movie...great descriptions, and tough, fun characters. I wish that authors were all truly immortal...he was one of the best.