I find it amusing that the two characters with a Chocobo gag in their stories are going up against each other.

I like both, and I'll echo the sentiment that Sahz is easily the best character if not the best thing about FFXIII in general, but Bartz is all sorts of fun in his own right and ultimately it came down to me sticking with an enjoyable character in an enjoyable game rather tha an enjoyable character in an insufferable game.