The only case I don't like in JFA is 2-3. The first one was pretty funny and second was solid case, the fourth one was simply epic. 4-4 was somewhat dissapointing because of that "Mason Stupidity" and the fact that you didn't beat Kristoph, you just cheat with the Jurist System. 4-2 simply horrible, end of story. Other than that and Phoenix beaing a hobo I've enjoyed olaying AJ. It's the weakest game in Ace Attorney series but still a pretty good game.
P.S. Sorry for my English, it's not my native language and stuff.