Have not played GB so won't comment. But TWD pro is one of my favorite games of all time.

I noticed OP mentioned ST. I have STLE and TWD pro along with AcDc and had SM.

IMO STLE/premium is much more flash with it's color changing lights, it shoots very well and is a heck of a lot of fun. I think the rules of STLE is so-so meaning it's good but not great. I mean put it on par with or better than average. But there are a few over the top great rules in pinball and I think TWD is up there.

I would not say TWD is that much better than ST. But I play TWD more often at this point.

If you have AcDc and SM in your collection, ST has a lot of the same flow feel. Maybe you want more or maybe you want something off beat like TWD.

this is a good point, again not having played GB can't say.

But TWD pro + Tspp/Met pro/ IM (you're spending ~$9K for two games).

Not to sound like a broken record but I like TWD pro and Met pro just as much (or more) than the premiums.

Don't think any Mellinials would like TWD because it doesn't give you a trophy for just participating.