How to get fighting Chocobo?

[Gorvi]

I heard that the healing one was the best way to go.. is this true?

Not really, it's personal preference. I've used a fighter type since day one and have only once or twice thought it'd be nice if he can heal. You can always buy an item to reset the points you allocated, so your decision isn't permanent.

[Garlyle]

Not really, it's personal preference. I've used a fighter type since day one and have only once or twice thought it'd be nice if he can heal. You can always buy an item to reset the points you allocated, so your decision isn't permanent.

Unfortunately, said item can run you a lot of gil, I think.

My personal recommendation is Healer, because it will massively extend your lifespan in some content (specifically FATEs which you may occasionally end up soloing).