Though I'm not completely happy with any of them. Only the 2011 version really attempts to capture the racism and child abuse that Heathcliff endures in the novel, I feel that every other cinematic attempt has emphasized the romance too much, but the family saga and social critique too little. That one is flawed too, of course, since it strays so far from the book, is nearly silent, and entirely leaves out the dark humor.
The 1970 Wuthering Heights film is adequate, staying as true to the basic narrative of the book as just about any. It is also presented so well that it ages gracefully, it's sincerely difficult to tell if this version was made in 1970, 1980, or 1995, but that's the timeless class of the BBC for ya.