The short story anthologies from Playboy. They really did publish some quality fiction with authors like Roald Dahl, Richard Matheson, Ray Bradbury, Shirley Jackson, John Updike, Jack Kerouac, Gabriel Garcia Marquez, Vladimir Nabokov, Norman Mailer, Joseph Heller, Kurt Vonnegut, Margaret Atwood, Ian Fleming, and others.
Specifically:
Playboy Stories: The Best of Forty Years of Short Fiction
The Playboy Book of Horror and the Supernatural
The Playboy Book of Science Fiction and Fantasy
Also Michael Moorcock's
The Cornelius Chronicles: The Final Programme / A Cure for Cancer / The English Assassin / The Condition of Muzak