It's not that I hate spirit channeling. I still play the game despite it. But...well, it really did detract from my enjoyment of a few cases.
I'd agree with AAI being consistently very good. I loved the game. One thing it suffered is that it's hard to get the tension going when your main character is Edgeworth. He never quite goes "JESUS CHRIST WHAT IS THE ANSWER" so it's hard to feel like the tension is really high. He seems more annoyed that he hasn't figured things out yet than anything else. I liked that tone though. It was pretty fun.
AJ...I liked a few points of it, but 4-1 was its best case and everything after that was a let down. I thought that 4-1 was setting the pace for the game's quality but that...really wasn't the case.