I'd have to go with Maiden for sure, and I am a notorious Stern basher. The competition has forced Stern to deal with most of its quality issues, but I'd still argue that ACNC is going to be better build quality than even the IMDN LE. The biggest seller for me on this Stern is that the design, rules and code are influenced by Keith Elwin, which means the code may actually be close to complete when the game ships, and the playfield will be different than the last 20 stern titles. If the code is anything like the initial GOTG code, my order will be cancelled immediately.
As for ACNC, the game offers nostalgia of some of the 90s w/b pins, which is awesome. The design and layout looks interesting and intriguing. That being said, I cannot stand Alice Cooper, to the point that I'd have trouble playing this on location, let alone in my house. I understand how this guy maybe appeals to Christian teenagers, but how do adults take his act/music seriously? I always thought he was some sort of satirical rocker, like a failed attempt at Spinal Tap. Now that I think about it, Spinal Tap would be a KILLER pin!