these are all awesome choices thank you for sharingSo it's probably the least exciting track in the entire Xeno-metaverse but I'd have to say Fifth Jerusalem from XSIII because I can listen to it on loop literally forever. I also love In A Limestone Cave and the theme from Abel's Ark in XSIII, Sakura's theme from XSII, and the beach of nothingness/Proto Merkabah leitmotif in XSI.
That might actually be my favorite ending theme in all of Saga. <3 Missing Year soundtrack is a goldmine of underrated bangers imo. I kind of went on a spiel about it over in this thread. :BBut as for the songs, I think that my favorite is the ending theme of Xenosaga - A Missing Year