@eniko a lot of them got really weird at the end (VIII, IX, and XIII are the ones I'm specifically thinking about, though for the life of me I can't even remember the plot of V or XII).
The most satisfying endings were IV, VI, and XIII-2, IIRC. X was probably the best balance of decent ending and good endgame content (I beat all but the last 2-3 hunts) but it had some other ultimate weapon nonsense that was really frustrating too; evidently it's better in the remaster?