When I started, I thought I had to have all of the top ten games. I've had many of them, but later realized how much theme and design mattered to me. With games being scarce in public it's tough to get to play many of the older titles. My advice is to go to some pinball shows and just play the games. You'll soon realize what types of games you gravitate to and which games have the "just one more game" feeling for you.