Mine are all on 3 except for whirlwind which is on 4. I had it up on 4 because when I first got it it was kicking my ass too much. I plan on dropping it back to 3 but haven't gotten around to it yet. I should mention that I still haven't hit wizard mode on any of my pins (i've gotten grand champ on whirlwind with the super cellar door mega whatever bonus). Closest I've come on 3 ball is always one continent away on ripleys or one planet away on my space jam. I may one day up them just to reach it but I like being able to get so close without doing it easily, gives me something to play for.