I would say badis have great personality. I have seen one stake out a cave and sit here with just his head sticking out watching the rest of the tank. Even scarlet badis hage great personality.
As far as best personality between fish and owner I would say in my limited experience betta fish. I had one trained to eat off my finger. He would jump just slightly out of the water to get to my finger.
I am considering a figure 8 now based on what everyone says about them. Wonder how they would get along with waspfish and everglades flounder....
Seems there are a lot of figure 8 votes on the thread! I might have to Check it out too