Final Fantasy IIj's final battle theme sounded the best for me, and I mean the original FFIIj not the Origins or DoS remakes of it. It was high quality at the time and I think it still sounds pretty good even by todays standards, but what can I say, i'm a freak! FFVIII's "Extreme" was pretty good too. I liked how it started out quiet and mysterious, then goes to fast and exciting.