I have both and they are great. But they are very different play.
What kind of games do you like?
AFM is and open playfield with a difficult progression to get to Rule The Universe.
CFTBL is a bit more crowded. There is only a 2 ball multiball and when you get used to the game not as difficult to get to Rescue the Girl. But the Super Jackpots are difficult to collect. There are also a few other scoring options you can do but don't need to do (Move your car, Peeping Tom)
Both are great games done with humor.