I don't really have a settled order after my top 5 other than Pinbot at 6th, but some other machines I've liked:
For Stern (2000 and later), I like Simpsons Pinball Party and Elvis (though TSPP wasn't much fun when the ball lock was broken), Lord of the Rings seemed good but I never had the chance to play it enough to really get into it.
For post-Twilight Zone machines (I consider TZ to be the peak of the Williams era), Medieval Madness, Attack From Mars, World Cup Soccer, Star Trek: TNG, Jack-Bot, Junkyard were all good machines but I don't think any of them will end up in my top ten.
All the Williams(/Bally) Pat Lawlor machines are good, though perhaps Road Show is the least of those. Banzai Run, Whirlwind, Funhouse, The Addams Family, No Good Gofers are all solid good machines. Other good machines from that same timeframe are Whitewater, Taxi, both Elviras (Elvira and the Party Monsters, Scared Stiff), Rollergames, Doctor Who, Terminator 2.
Earlier than that there's Eight Ball Deluxe, Laser Cue, Sorcerer, Space Shuttle, Comet, High Speed of course, F-14 Tomcat, Fire! and Cyclone.
I don't have a lot of experience with machines older than that, but Gorgar, Laser Ball, Firepower, Black Knight, and Fathom were fun to play.