Ranking your EMs can be fun, but it is like watching weather forecasts. Everything changes over time.
I had buyers' remorse after picking up a Domino. I would have put it in last place. I put a Shay glass in it to make it look better, but that made me regret my purchase even more.
Then I realized how much fun Domino is to play. It's a great pin! And now that the Shay Domino glasses are gone, I am relieved that I have one.
As of now:
1. Mars Trek
2. Grand Prix
3. Royal Flush
4. Domino
5. Full House
6. Teacher's Pet
7. Zig Zag
8. Palooka
9. Criterium '75 (only because it is a project, and will be a low-end-pin-machine at best)