I would ask yourself what type of rulesets do you prefer. Do you prefer points focused rulsets or those that are objective based that go through a story?

Personally I prefer objective based rulsets that go through a themes story. For that reason I found ACDC's rulset to be rather boring as it's just all about points and the modes, the songs, just focus on hitting one main shot for that song over and over again.

I like The Walking Dead TV show but just can't get into the pin. The lack of voices from the show is a big bummer. Yes you can get a custom voice pack from the Pinside community but the actors are still not incorporated into the games modes which for such a heavy character based show is another bummer. I also heavily dislike the artwork, find it ugly, and the game goes way overboard with white lighting. Also, the giant walker head in the barn just isn't interesting to me, that area should have incorporated a more interactive toy.

Now for Ghostbusters Premium. GB premium in my opinion is one of Sterns best games they have put out. The game has a very unique layout, incredible artwork, excellent theme integration, great use of assets, has multiple unique and interactive toys, has custom callouts by an actor that was in the film's and a great story based ruleset.

The subway ramp that drops under the playfield with physical ball lock integration, magna slings, double scoop shots one with a unique captive ball mech, moving Slimer, and Ecto Goggles are some of my favorite features in pinball. If you want a loaded pin with a true world under glass feeling Ghostbusters Premium is the game to get.