I'm not into battle themes as much as I am for the more relaxing tunes on an OST (see my post below), but Weapons of White was up my style.
I'm a bigger fan of Quaternary and Unary.... but I oddly like the crazy beats, they helped agitate me to solve the puzzles on deck.. Yeah, weird reasoning. I do like that one for being 1000x more chill though.
The FF7 Boss theme I forgot how good it was till you played it here.... I love when that weird synth instrument comes in, it's like something between a flute and a beep-sound (comes in at the 37 sec. mark). I also fully endorse boss/battle music with organs in it.
Oooh, I loved this one, had it as a cell phone ring tone till people said it was kinda intense (with that in mind, now it tells me when work is calling). Really catchy, oddly paced.
http://youtu.be/v_8vgQS3do0Star Ocean 2 - Moderate
I was going through a bad time as school when I picked up SO2, so the idea of being whisked away to some exotic planet sounded just dandy. But more than that, I loved how the game took you from a futuristic Earth to a really pretty, nature-filled planet; I think the town music in both Arlia and Mars (this song being from the latter) definitely give off that idea of being far from home, but still peaceful with that.
http://youtu.be/tYfHuImlFzkAtelier Ayesha - Rain in the Dried Up Valley
Very earthy-sound. There's a great buildup, a strong piano rhythm, and an exhiliterating crescendo at the 1minute mark.
http://youtu.be/iLkfmnK7t20Dragon's Dogma - Character Creation
Can you ask for a more weird blend of genres? Very interesting tune, back when the demo came out, I cleaned my room a bit and let the song play.
http://youtu.be/qS_3GEdXvPQHalo 4 - Blue and Green (KOAN remix)
More chill music, very, very nice.