I prefer Met pro over the LE as the hammer blocks the view, you don't have a proper captive ball, hammer doesn't always work - well, in early versions, not sure now. Met pro has metal ramps and think it is one of best bang for buck pro's Stern have done.Are you really sure you want the AC/DC pro? Premium is fantastic, pro means restricted game and the dreadful angus playfield! Admittedly I'm not sure I've ever played the pro but it really does look like a compromised machine compared to the standard version
Still not 100C% sure I did the right thing in getting a Metallica pro. I know the flow is better but I do look enviously at the Hammer on the Premium
Good luck with your hunt