After a few months with all my friends playing ours - the current Grand Champion score is about 58 million (Factory settings).
I love RBION. Top 5 Stern for me. It feels like Lawlor took elements from his classics (especially TZ & TAF) and put them in here. The playfield layout is very similar to TAF.
Beginners really do have a fun time with it- it's easy to start modes/multi-balls. If you really want to put up a good score though, you have to have a strategy and know how to pick and choose your shots. Definitely a thinking players pin! Learning how to beat each mode is quite a challenge as well. You can stack many of the modes and scoring, it's almost overwhelming sometimes.
The Super Jackpot is very difficult and one of my favorite of all time. I love shooting that right loop only to have the peg pop up and return the ball nice and easy for an attempt at it off the upper right flipper. Very hard to do, especially during multiball.
I have ours modded with some figures and LEDs... Hopefully we can put up some nice pictures soon for people to check out on here.