I own all 3 and afm has the most staying power for me. It's faster, the shots are tighter, and the code to rule the universe is more unique. MB is a fun game but you can see all it has to offer on your first game playing it. MM has great toys but I just don't enjoy it as much as the other 2.

There just isn't a ton of code for the game. You have the 6 main monster modes and that is really it. You do have a mini wizard mode and the final wizard mode but both are just normal multiballs without and real progression. You just keep shooting jackpots until you lose the multiball. It's a great game and really fun to play but it is pretty shallow. Similar to Scared Stiff in that way but scared stiff has a progression based wizard mode which makes it stand out. I still love playing both games though. To me MM is the one that falls a little flat on code. It has deeper code but it's just shoot this shot 3 times, do it again, do it again. 3 great games though

AFM by a mile. Most unique code and just the best overall pinball experience. MM gets stale much faster. MB is a ton of fun but is an easy game. Fantastic for location if it was cheaper but probably the worst of the 3 for a home environment.