Premiums are going to be used in the tournament, as Hilton mentioned, free to enter.
One of them is mine. I generally like Pros better because I find them faster. I played a ton of both and after the pro wasn't even sure I would get one, and I'm a huge Ghostbusters nerd. Like, mouth breathing, nerd. And after time with the pro I wasn't sure it was a game for me.
The premium changed that. Part of that may be that it was Neos premium, and he made a couple fixes, but in general the pro doesn't have many shots from the left flipper and the premium does. That was what drove me nuts about the pro, and the premium fixes it.
You can order one from Marco while at the show if you'd like. But do play first, I get that the pro some people find better. I am going to put a pro translite into my game when it's done this weekend as I like that one way more!