Sometimes genre fiction is a tribe or club the writing of members is considered in and of outsiders out. Take Science Fiction for instance Confessions of a Crap Artist is science fiction because it was written by Philip K. Dick it only has UFOs in one chapter and they don't have anything to do with the plot.
Here are a coupla storys written by Highfalutin "serious" literary writers. The Machine Stops by E.M. Forster in 1909 predicts tablet computers , facebook and epidemic obesity. The Road by Cormac McCarthy not only it the most depressing book ever written it takes place in a post-apocalyptic America complete with Mad-max style rape gangs. Disney's John Carter of Mars was written by Pulitzer-prize winning Michael Chabon!!??! So what do y'all got what is the best science fiction written by the wrong folks?