One winged angel is one of my least favorite of Uematsu's songs. The FF7 soundtrack is otherwise incredible, of course. FF9 soundtrack is good, but I think FF6/FF7/FF8 are better. If I had to pick I'd say that FF6 is my favorite. FF4 is great too. A few of the FF4 songs are played by major orchestras currently, which is pretty god damn amazing when you consider that the original songs are 8 bit audio and rarely >30 seconds long.

I think the Chrono Trigger, Chrono Cross, and Xenogears soundtracks are at least slightly better than any of the Final Fantasy soundtracks, though. Mitsuda's weakness seems to be volume. Uematsu can just crank out four hours of masterpiece-level music on a deadline. Mitsuda got so stressed out over Chrono Trigger that he had to be hospitalized with ulcers.