I had many.
Arm break thunder is the most satisfying to pull off though. I'd probably already played each game about 7 or 8 times before I found the button combination for it, and what a sweet moment that was
Oblique slam (< X+Y) because it's also really satisfying to pull off
For practical purposes,
rain thrust. It's my bread and butter move. Good for getting into range to set other moves up, and also just to take the enemy's health down slowly through repeated uses
Horshoe kick to put the opponent down, then throw in an extra kick for good measure. Nice for slowing down the tempo of a fight for a moment
Demon drop because it's bad ass
Arm break thunder is my favourite though