Quoted from Zippee:
why did they make four varieties of this machine? is this like when a magazine prints multiple covers the same week of the same star, big fans will buy all four covers? does stern expect big acdc fans to buy all four machines? or is this a scheme to keep the machine popular and selling, by releasing new varieties? it sounds more like some cars brands, where a new model is released each year but often the changes from the prior year are minor like a different shaped tailight
For the most part it is simply like an auto manufacturer selling different models. The no-frills pro, and then all the rest which are just different colors and trim levels.
So the pro... Some people like it better. It's faster without the drop targets, but missing some thigs like the lower playfield.
The premiums. These are almost considered the regular model. Available in two different art packages. Both good (Luci is sexy). Gameplay is the same, however I understand they changed the cannon a bit later, plus later runs have a more clear window to the lower playfield.
The LEs. These are the more expensive limited editions. And when they came out the price went up and up. These are quite pretty.
For play the premiums and LEs are exactly the same. So it really comes down to what you're looking for. I highly recommend playing the pro and premium before making a decision. You really should figure out which style you like first.
And finally a note about the game itself. It takes a while to really get the flow of the rules. AC/DC is a wacky twisted up boring mess as you get to know it. It feels repetitive and like your just batting the ball around. At least it did for me... And then it just clicks. All of a sudden you realize that double song jackpot could have been tripled with a few more risky shots. And then you start debating risk vs reward. I can take that jackpot now... Or build it bigger and risk getting nothing if I drain. That song jackpot collection is a huge thrill or massive disappointment that usually ends with swearing.