Personally I think you are polling the wrong audience. I picked new stern, not because that would draw me there, but I suspect that is what people will want to play, and will probably have the least amount of work needed to keep them running.
Now if was something to draw me to play, Iād say a little bit of everything, EMs, solid states, Williams and Bally, early 2000 sterns, JJP, some of the remakes that are flowing through... personally, anything BUT Raven will bring me to a place to play pinball