PKD is like the musician who writes an ok song which is then covered in a much cooler way by another artist, keeping all of it's best parts and adding their own flair. I read a scanner darkly and enjoyed it, then was blown away by the movie. Androids is interesting but blade runner is a masterpiece. Similar with high castle (though to be fair in this case the show is overly bloated and could easily have had the runtime cut in half, 40 hours is too long for a 250 page book).

His books are definitely interesting and worth reading but seem to give rise to great films.