Nobuo Uematsa can easily deliver a solid soundtrack with hand loads of verying tracks and moods. I think Yasunori Mitsuda usually makes slightly watered down tracks with the occasional gem in his soundtracks, But theres often alot of crap to wade through. The only soundtracks of Mitsudas Ive listened to is CC, CT, XG, XS episode I. CT had a fair bit of Nobuo in it. CC had alot of nice songs but alot of trash as well. I think Xenogears and Xenosaga were the same although both those soundtracks have some of my favourite songs in them.