I need to unlock that one, I love that track!Congrats! I'm in the same boat with All Night difficulty, never really been able to manage it. I found the P3D and P5D songs easier to King Crazy than the P4D ones though. I think I've only managed a couple of KCs in P4D while I've done over half of the non DLC songs in P3/5D.
For what it's worth, I've found Price to be the easiest song in the game.