This is both personality wise and game play wise.

Personality wise I'd have to go with Shiki since I can relate to her more so than Joshua or Beat.

Gameplay wise I'd go with Joshua all the way, I find the number system much more streamlined than the psychic cards or the poker cards for Beat.

I was best with Shiki for gameplay.

Personality-wise, they're all so great :o)

Really think so? I couldn't stand Joshua. His little 'I'm scheming something" really didn't click with me. Even with the end of his chapter...

Um...Joshua.  Why?  He's broken.  That's why.  Until I figured that out, I liked Shiki the best.

personality-wise, Joshua, as he wasnt annoying like the other two.
Gameplay-wise, ditto ,as he has the best brand advantages, the easiest fusion system, and levitating prevents him from taking any damage whatsoever from certain enemies.

Shiki definitely had the best personality, though it was cool slowly figuring out Joshua...well at least thinking you figured him out. Joshua does have the best battle techniques.

gameplay=shiki
personality= beat.