My top three Williams EMs are all Gottliebs
If I was forced to own a Williams EM I would say Klondike Special (specifically for the artwork with the stinky bear), Honey (love the artwork for some reason) and that's it. The 60s Williams EMs were much prettier and more fun in my opinion. Never played a Williams EM that did anything for me gameplay wise, and the artwork is just so clearly inferior Gottlieb games.