I loved Stephen King's earlier work, but I stopped reading him around the time he wrote "From A Buick 8" His novel "The Shining" is perhaps the scariest book that I've ever read! "The Stand" was excellent, also.
I'm a guy, and guys like adventure and war stories, and W.E.B. Griffin wrote some pretty good ones, like his series, "The Corps"
Tom Clancey has also written a couple of good ones, too, with "The Hunt for Red October" and "Red Storm Rising" among the top favorites.
Larry McMurtry has written what is perhaps the best western story ever in "Lonesome Dove." This sprawling adventure/romance rivals stories by James Fennimore Cooper and Louis L' Amour. He has a number of other westerns, and even a crime story about Charlie "Pretty Boy" (which nobody ever used except the FBI) Floyd.