It's not the greatest by far, layout is too simple, should have had some upper flippers for cross shots, but the rules are what set it apart, they are a new turn as far as points and how quickly they can come and be taken off the table. I like that about it.
What I kind of don't like is that though is that there are 12 "modes", but essentially there isn't, as they all do the exact same thing: you have to hit 8 song shots to change the song, and the only difference is the corresponding shot that activates the jackpots. There are some subtle differences in how these work, but you really just do more or less the same thing over and over to different music.
I have wondered if there is a benefit to simply staying in the same song the entire time, I wonder what goodies are available when really loading up a point value in a song compared to playing a few songs before ending that game. Obviously encore has big points, I didn't understand it the one time I made it, but in most games, where you are lucky to get to a few songs, I do wonder if it's worth changing at all.
What I find ACDC does lack is that certain charm as a whole must great machines have. I think it's a great tourny machine, fun, great overall show (big time), but it does lack something great to me, I'm not sure how to further describe that, but I do feel this when playing it.