Xenosaga: Episode I - 8.5 - I found the story for the first half of the game boring, but it picked up after that. Albedo is one of the best antagonists I've seen in a JRPG. The battle system was fun. Music was good too, but I was a little upset the battle theme was the same for normal & boss battles. One thing I didn't like was no map. In the beginning, you are told to go to this room with no map, so you're basically wasting your time running around looking for the room. This happened a lot in the first few hours.
Xenosaga: Episode II - 7.5 - Story was fantastic. Music was generic. I didn't like some of the new voice-overs, and Kos-Mos looked hideous. The battle system wasn't as fun as the previous, but I still enjoyed it. It didn't have those flashy tech attacks. The battle load times were ridiculous. The characters were loaded individually, and the game was difficult. Also, normal battles were lengthy; it normally took more than 5 minutes to beat one. Despite those complaints, I liked Xenosaga 2. It's better than most JRPGs I've played.
Xenosaga: Episode III - 9.0 - Best story out of the three; the ending felt rushed though. The battle system was pretty good, but not as fun as Xenosaga I.
Overall: 8.5