I liked the music better in Chrono Cross, but I liked the story better in Xenogears. I wasn't a big fan of the gameplay in either.

Chrono Cross is a very good game, but Xenogears is fantastic. I regret putting the game off for years because I hate mech games/stories/animes. It wasn't a mech game like I thought, it was actually incredibly religious and deep. And I like that kind of thing.