1. IMDN - For me this one is the perfect blend of flow, rules and integration. I like the music in general, but far from a big fan. I've owned this one for a couple of years and it keeps drawing me back.
2. GZ - This layout has so many unique ball paths. I think the light show is fantastic. Modes and rules are great and only getting better. My only minor gripe is that you start each game exactly the same way - ramps, then fight in Tokyo. It opens up wide after that.
3. JP - I have only played this maybe three times on location, but have a NIB arriving this week. I already know I will enjoy it more than AIQ.
4. AIQ - To be fair, I have only played this maybe 50ish times but it is clear #4. The theme integration and callouts bore me to tears. As mentioned elsewhere, this game just feels soulless in gameplay. I was surprised to find how much these aspects mattered to me. Such a shame as it shoots like a dream. It would be great if it could be rethemed.