I own both. and I can tell you imho they are the top 2 games in my collection by far, and the top 2 of any pinballs i have ever played. but with that said, i can't give you advice as to which one to choose. They are both that good. Also MMR is about much more than just blowing up the castle, if that's all it was about it would get old real fast. The game is much, much deeper than that. in my pinside ratings I rate AC/DC a little bit higher than MMR, simply because it is as close to perfect as a pinball can get. But they will be the last 2 games to ever leave my collection. Good luck with your choice, but you can't go wrong with either one.