I'd agree that Episode II was the weakest, but almost entirely because of Disc 2. Before that it's not too far from Xenosaga I, if only because Xenosaga I might suffer from the reverse problem, where the beginning is probably the weakest part. If you toss in Xenogears's various issues, that might make Xenosaga III the only Xeno-game to not run into this kind of problem for me. Although I suppose you could argue it starts running into it during the final chapter, but I can never quite tell if it's just because I'm comparing it to Chapters 7 and 8, which IMO, are probably the best stretch of any game.
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xp1337: Don't you wish there was a spell-checker that told you when you a word out?
GotD (219/384) Melee v FFX