My nod would go to Ross. Not to say Raynor did not create great Par 3's. I believe as a composition of holes on any given course Ross had greater varierty - variety in length, alignment, routing, green size, green undulation, green size.... Raynor did do the same, but from course to course you can predict which Par 3's you will find; Short, Eden, Redan, Biaritzz, Reverse Redan. Ross may have been prototypical in some of his green undulations; center ridge, center swale, diagonal swale, center prowl, but from course to course there was much greater variety.