Start doing some charity work helping people fix up their busted pins and it won't be too long before an EM will fall into your lap. My tech buddy doesn't personally like EMs as they are a ton of wiring. Be prepared to clean all the contacts. We were working on a Genie and the owner took us across the street to see a non-working Spin Out. Just make sure to look into parts availability before you commit to by.
I once saw 2 Night Riders in a guys garage the EM and the SS that would be really neat to play both and compare the 'feel' of play.