I actually think his neutral triangle (bolts) is his goto move. You get an AP bonus if you land successive bolts! Combine this with up Triangle, and he's a beast from long range. At close range, air up Circle is way good to stay safe while bombing on dudes below.
Down Circle is way good too!
i thought with them having different circle attacks and slightly different triangle attacks would make me choose one,
but both of them are pretty awesome, sometimes i get confused and end up mixing them up when i'm playing as one of them XD