If you want to keep the cost reasonable, i e $2500 or so, I'd recommend Jurassic Park. I started with an F- 14. I bought it cheap from an F-18 pilot and it was junk. I was just too dumb to know it. Nothing had been done on it for years. It only got cleaned when one of his buddies gave it a beer bath. And along the way they tried to change the F-14 logo to F-18. But, that game definitely taught me how to repair pinball machines. I now have more money in it than I'll ever get out of it. I still love playing that machine and plan to keep it. I'm even toying with buying a new Playfield for it. I just don't know if I want to dump that much more money into it. The third game I bought was a Jurassic Park from a guy who owned it 20 years and maintained it well. (But the it did have a major hack on the power supply board that I fixed just for my peace of mind.) The JP playfield and cabinet looked brand new. That game in that condition was definitely a different pinball experience. I just jumped in and started playing that game and tweaked it along the way. The Jurassic Park seems to be a theme and Rule set that everybody understands. which makes it a fun game to play for whoever comes over. Personally, I wish I would have started with that well of a maintained machine first. My personal favorite is Terminator 2, but I'm not 100% sure that game is for everyone.