Earthshaker is one of my favorites to play in my collection . You should be able to find one for $2500 that's pretty nice. But you already know about that one.
Space Station is a very cool looking pin with LED's , and a great value, but ball moves fast due to no in lanes . Best light show of all my pins , no close second . Not a stop and go pin at all in my opinion so that might not fit your needs .
Road show is a fun game and is usually price below the others in that era, it's got lots of ramps if you like ramps. No fear I know nothing about , except it's usually around $2500 for a DMD pin .
If you want to come over and play the games in my collection, and decide on what you might want in your next pin, we can work that out. I'm only a half hour from you . Just shoot me a pm .
JP