All the games listed are great "player's" machines. Considering it is a "buyer's" market right now, you should have no trouble tracking one down. I'd be watching eBay as a few titles do appear from time to time.
Spirit of 76 and Pioneer are a VERY common EM. Sof76 is my "all time favorite" EM.
Solar City, Target Alpha, El Dorado and Goldstrike share the same layout (only missing title is Canada Dry). TA would be the most likely machine you would track down. Solar City did appear twice last year on Fleabay.
El Dorado are fairly rare, wedgeheads of this variety don't change hands often.
Royal fFlush - fairly common game. Great layout.
Best of luck with the search
