If you are looking to buy a pinball machine, I normally have a collection of around 10-15 machines at any one time and sometimes move machines on to get to experience other games. Feel free to contact me if you might be interested in purchasing a machine as I can let you know what games I currently have and also point you in the direction of other sellers or dealers that i have had good experiences with.
I generally have a collection based around a number of the following titles:
Star Trek: Next Generation
Theatre of Magic
And hopefully lots more!!
See the pic below of a shot of my gamesroom (click on it for a larger image)