For some reason, I prefer the Ashe/Balthier pairing, although there is much more evidence to support the Balthier/Fran couple and I think it's far more likely (by that I mean that Ashe/Balthier is damn near impossible ) that they'd get together.
But I'll finish the game first (I'm still stuck in Pharos Lighthouse, trying to beat Famfrit:rolleyes2 ) then I'll see if I've changed my views.