Dunno if its the best but i do like it is the rfm wizard mode multiball. Because you have to play a video style mode with multiple balls flying around, i find it challenging to get a super score.
You manipulate the position of the aliens with the secondary flipper buttons so you can hit them with the balls via the regular flipper buttons. Difficult to keep those balls in play and kill the boss and score maximum points.
Tz has a mad multiball but really its just a flip fest for 30 seconds or so