Who's the perkiest - Yuffie, Selphie, Rikku or Vanille?

[Gilgamesh]

These are all characters from Final Fantasy games and of course there's usually one character in a Final Fantasy game that stands out the most of being the most happy, excited and well perky. So I tried to find the 4 most perkiest girls in all Final Fantasy games and I got Yuffie, Selphie, Rikku and Vanille. Which do you thinks the perkiest?

   

             Yuffie                                   Selphie                                     Vanille                                       Rikku