Funnily enough, I've had my PRO for about 2 years now (first NIB I ever owned) and I just upgraded to the Premium. Right now, I have them both... lol.
The main reason I upgraded was because I wanted to try something new on the game. I've improved my skills to the point of finishing the game (once, mind you) and I still LOVE the game a lot so I figured that getting the premium was like watching the "Director's Cut" of a favorite movie of mine. I realize it's not exactly the same, but that's the analogy I'd make.
I actually love the artwork/translite on all 3 models (ZombieYeti or Die!) so that was fun to upgrade, just to see something different in my game room.
In terms of actual gameplay, I've been playing for a couple of days now and essentially the 2 MAIN differences are: the LOOP shot via the left orbit which is pretty kickass I will say (this also comes with an added "bonus mode" called DISCO LOOPS which I had never experienced before) as well as the actual DISCO BALL, which you can also purchase as a MOD for the PRO, although it's not exactly the same. Oh and I like the red wire form ramp as well...
I do NOT like the drop targets in the PREMIUM so far, as the balls seems to get "stuck" in there sometimes (for a split second) and then gets spit out and is hard to handle, so that's not cool. I much prefer the stand-up targets in the PRO.
In the end, I don't regret the upgrade because I like the new art on the game, dig the DISCO BALL and the new left orbit shot, but I certainly wouldn't recommend anyone to take the PREMIUM over the PRO because the differences are not a lot and not really worth the difference in price, imho.
Oh, I also noticed that since the PREMIUM was built on May 4th (yeah, like 2 weeks ago!), it's a lot more solid, as in the SCOOP seems to suck in everything in its path, the SNIKT shot is even better on this one and the roll-down from LIL DEADPOOL goes more to my left flipper than it did before, but I imagine these are all areas that Stern has probably improved on since I purchased my PRO back in late 2018.
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