I have Premiums of both and love 'em both, but I give a slight edge to Metallica. AC/DC is a mean player with the cannon shot putting the ball in instant side to side action danger. I mean, that's exciting, but man.. it's a drag cashing in a jackpot shot with the cannon and being rewarded with an instant outlane drain. Also, I've had my AC/DC for more than a year, and I only sniffed Encore once when I completed 11 songs, noticed I had 11 of 12 songs completed, then got really nervous and botched some shots and that was it. The closest I've gotten other than that was 10 songs a handful of times. Will I ever get to Encore? I wonder, but it does keep me coming back to try. Metallica by comparison is kinder to me and less infuriating, LOL. It's just plain old fun and I love the Dirty Donny artwork and the James Hetfield callouts and taunts are gold to me. I love 'em.
I find I pretty much agree with the rankings of AC/DC and Metallica on the Pinside Top 100 currently. I think they're both top 10 games in my opinion. The funner and friendlier to play Metallica with better looking Dirty Donny art seems fairly positioned at #6, and the meaner playing and sometimes infuriating AC/DC is at #10 which also seems fair. AC/DC may, just may, move up a couple of spots and get closer to Metallica when Lyman finalizes the current code by completing the OI Frenzy mode and possibly (I repeat - possibly) puts in a mini-wizard mode that recognizes the accomplishment of completing 6 songs, something that us mere pinball mortals can do. Metallica code I think is pretty much finalized.