I agree about Delay being a psychedelic masterpiece, to be heard in conjunction with Monster Movie as a double fest. But it is definitely NOT neglected, it is even in the KRS Top 50. Perhaps it is taken for granted because it is early Can. The singles and bootleg releases of the time (like Shikaku Maru Ten, Radio Waves or Canaxis for instance) are great raw stuff too. Rock'n'roll.