Quoted from Coolpinballdino:

I would get the premium it has more fun features but if you are getting the game for a tournament get the pro because it is less random.

Quoted from pipes:

I went for a pro as well for pretty much the same reasons. Not a fan of the Magna slings. If you don't see it on future pins there's a reason for that. Prefer the flow of the gameplay on the pro as well.

Quoted from freddy:

i am not disappointed with my pro. I have three friends with an LE and i like my pro better the LE's looks nicer! And allthough the mag slings are cool, I like the predicability of the standard slings. I love the ecto goggles but for the price difference i can live with out them.The pro offers a very similar game experience. if your the type that needs the LE tag on a game then go LE
if you can't live with out ecto goggles and mag slings the get premium or Le but the Pro offeres just as much Fun!

Quoted from pipes:

I hear what you're saying...it's a neat feature for sure but the unpredictable nature of the slings is a turn off for me.

Quoted from goatdan:

I'm working on the same decision right now, with the debate being way harder than I expected. I also have the third option of none.
I stopped at a place I knew had the Pro tonight and played it for about an hour to try to help my decision. In short...
The Pro's art package is by far the best of any version to me. I'm a huge nerd when it comes to Ghostbusters, and the art on the Premium and LE I simply don't like half as much.
I may be a weird-o (I am), but I like the weird ramp on the Pro. Having said that, the Pro that I was playing, the ball kept getting hung up on the switches if you hit it up there from the right entry, which was annoying. The overall light show and sound package is outstanding on each. The Premium I also like the weird ramp on, but I like the right ramp just a bit less than the "same ramp entry". I need time on a Premium to understand the rest that I like or don't about it.
Having said that, I'm still figuring out if it is a great game for me or not. I mean, I feel like I should own one because I have so much Ghostbusters merch that I intend to showcase in my gameroom, it seems like a lost opportunity not to have the pin transition the room together, but I think what bothers me about it is the game is extremely, extremely right flipper heavy. The left flipper basically has the right orbit, and... the ramp if you can hit it, and that's about it to shoot for. The right flipper has everything else. On top of that, the game is tough to trap the ball, and it seems to feed the left flipper a lot, meaning that you have limited shots to shoot for and a lot of the left flipper misses are really dangerous.
I bring this up because you may want to try to do some searching to play one first. After an hour with the game, even considering myself one of the biggest Ghostbusters fans in the world, I'm no closer to fully knowing if the game is for me or not. If it's at all possible, this seems like a good one to get some serious time on before making your call... I hope to spend a few more hours in the next week doing just that!

Quoted from T7:

Have you tried the center post mod or longer flipper bats?
I'm normally not a fan of center posts, but it definitely makes GB more fun. The gap is just too wide.

Quoted from goatdan:

I got a chance last week to play Neo's GB Premium for a while, and... It won me over. Here's why for me...
Now, preface this to say first that Neo adjusted his flippers on his Premium to be at a bit of a higher resting angle. This may be my biggest reason for the difference that I have in my opinion of it, because it completely changes the left flipper shots. My experience with the Pro, the left flipper basically had the right orbit and that was it. On Neo's machine, you can backhand the ramp, the shot to the pops, the Ghost target, take a regular shot to the orbit and even sometimes hit the right ramp when you are trying to. This completely changed the game, as the strategy opened up so much further.
If this was done to the Pro, I may like it just about as much. Since the Pros that I have played didn't play like this, I can't say.
Additionally...
The Ecto Goggles are gimmicky, but fine.
Slimer sliding back and forth is equally gimmicky, but fine. I don't much care for him above the pops with his backside facing me and not moving, so I'll actually give this one to the pro, but it's really close.
The right ramp is better. No hang ups, and Neo's was easy enough to hit that it felt like it was another shot on that side of the playfield.
The left ramp with the Subway is really cool.
The Magna Slings are really cool. Yes, they don't act like regular slings. But every time it threw the ball down toward my flippers, it felt like I could have saved it with a well timed bump or a better placed shot. Like the magnets in Iron Man that people liked to complain about at first, they are controllable, although it's a bit less so since they are closer to the flippers... BUT, regular slings don't usually do what I want them to do anyway, so there is that. I dig when they change what they do a bit too.
Overall, it may be just because the flipper alignment was so much better, but it felt like a great game, whereas the Pros I have played feel like a pretty good game. None of the upgrades themselves I think justify the money, but it just seems like the Premium is slightly better in the way of being "there".

Quoted from Allibaster:

Is there a lighting difference on Premium??
The Premium is pretty sweet. If I some extra "pinball money", I would've gone that route. Pro is kick ass as it is. I'm really enjoying this game!

Quoted from Jdawg4422:

I would buy a Pro. Just the comments that if you want a league or tournament machine it would have to be the Pro. I really like the subway ramp on the premium and the actual ball locks but the stupid magna slings kill it for me. Thats why it cant be a tournament game. On the LE i have had the ball go to the magna slings and then get thrown right down the middle of the flippers multiple times. Its just frustrating to get cheated out of a good game because of the randomness of the slings(cant really nudge because you have no idea how its going to get slung around the playfield, atleast with normal slings they are predictable to a certain degree). If you could turn off the magna slings and have it normal slings i would vote for the premium.

Quoted from DaveH:

Good choice. I don't like GB, that's no secret. However, between the two, I like the premium much better than the Pro.