This has been commented on a few times for the past couple of pages in this thread. Start reading from back a couple of pages.
If you are asking this question, then you can afford the price jump for the premium, right? Go for it, you wont regret it. I played the Pro at least a hundred times on locations and shows, and the premium was only found to be played maybe 20 times for us at shows. We made the decision to go with a HUO used Prem. There is more there for elevator multi-ball, coming down from the upper play field you can get a toy box lock if you go back down the elevator, or possibly activate the 2x multiplier by completing the loop up there. For home use, there is just more there to play and shoot for, and more strategy. That is a good thing for home use if you hope to keep it long term. That doesn't matter to some people - does it to you? If you just plan to buy one, play it for a while, then sell it, you will take a hit on a prem for what it will sell for. Can you accept that with no regrets? The Pro seems to be taking a smaller hit for used sales. If you're in it for the long haul, go premium ... you will have more fun with it and the "lastability" will probably be better. But ... always try them both before you buy one. Everyone's fun factor values are different.