Bearing in mind that Orbitor 1 is a unique game and no other manufacturer made anything like it, I'd have to say this one... otherwise my collection would lack this uniqueness... All other manufacturers made flat-playfield games, so I can have my fill of these from these
How come this unique game is not in the voting list?
If the question was: 'What do you think is the best classic Stern?' the answer could be different... To be honest I think I'd still pick the mighty Orbitor 1 though!