Here is my $.02
I have a pro and love the game. I would love to have an LE/Prem, it seems very very cool, but the price difference is too much for what you get IMO.
Everybody raves about the walker bombs, and some even say that's the reason they bought the Prem/Le. Those sound pretty cool and I'd love to have them, but are they worth $1500-$2000 more? I don't think so. All you're really getting with walker bombs is a $2 button and software. I think Stern could put walker bombs in a pro very easily. You could use the start button to activate them. This wouldn't restart the game since you have the hold the start button to restart. They could even extend the restart button hold to 5 seconds or so. Also, if you're playing a 1 player game, they would have to get the game to stop adding another player on ball 1. Easily done, just only allow the player to add another player for the first 10-15 seconds or so. Kudos to Stern for tricking people into paying a ton more for a game for a $2 button. I don't like it, but it's a smart business move to get more money.
I also hear a lot of complaints about the BG ramp, so I've go no problem with that missing from the pro. There are already 2 bash toys, I'm not dying without a third one.
The magnet in front the the well walker, don't mind not having it at all. I actually like to be able to hit him and know where my ball will be after that. Don't get me wrong, I LOVE magnets, but the prison has one, so I've got my magnet fix on that game. I also hear that the well walker magnet is too close to the flippers and creates some brutal drains at times. No need to make this game any tougher than it already is.
The crossbow, I'd like to have that, but I also hear a lot of complaints about it. I wish that on the pro, they would give you 3 seconds or so to control the ball instead of killing the crossbow shot on the first switch hit. It would nice to be able to get the ball to the right flipper to shoot some left side shots first.
The $10 spinner....don't care at all that it's missing.
The $10 drop target...don't care at all that it's missing.
The fish tank...don't care at all that it's missing.
The light show...now that is something I would like to have, but not a deal breaker for me.
So all in all, I'm very happy with the pro. I don't see myself upgrading to a premium. Maybe if it was $500 more, but not at the price point they are at now. I'd rather save that money and have more games. I would say if you're budget minded, go with the pro. You won't be disappointed.