I like FFX, its one of my favourite FF games and it's story is pretty serious.... Well somewhat serious. Its pretty much Yuna going on a pilgramage to commit suicide, thats pretty serious. And I found Jecht's scenes to to be the lighter side of the story. Rikku has some comical moments as well.

Anyway, by the looks of things, they've made the maps much more open this time around. For me, that was the only real problem with the game. I found the battle system and story really enjoyable.