So I'm trying to get all party at level 90, to make it worth using the Onion Knight (thanks Maxx Power!)
What is the best place to level up in the game? Is it the final dungeon? Speaking of which, how do I kill Dragons? I'm at level 60-62 already, but they keep on owning me.

Also, does anyone know how the class leveling up system works? Refia seems to never level up her classes and this annoys me to no end, while Ingus is the fastest, but I couldn't quite get why this happens.