I can't overstate the awesomeness of Kelly Bailey's stuff. He's the guy that's done all of the music for the Half-Life series. I listen to Vortal Combat on, essentially, a daily basis. The only problem with a lot of the music is that the music is meant to be played with the game. For example, the song Last Legs, which plays during the final battle in Episode 2, has a huge chunk in the middle where's it's pretty much just drums. In the game, the gameplay and the music compliment each other, and the drums keep the intensity quite nicely. However, on its own, it seems like the middle part should almost be omitted entirely. It's still excellent, though.
Then there's Seiken Densetsu 3 and 4. I can't get over how AMAZING the SD3 final songs are. I've been trying to find a remix of Sacrifice Part 2, which has incredible drum work, and Sacrifice Part 3. Remember when final boss music was just awesome, complex, awe-inspiring pieces of amazement? Sacrifice Part 3 is the epitome of that, I believe. I'd really like to hear what these songs would be with higher sound quality.
For Seiken Densetsu 4 (called Dawn of Mana in the states), the game had 4 different composers work on the game, leading to excellent music of all genres. The Latin-based Fool's Dance remains one of my favorite songs, and the techno Death Sally Battle is incredible as well.
I also love the FFX soundtrack, but the ending theme that was linked to at the beginng is just too slow. I appreciate slow, beautiful songs, but that was just snail-paced. Zanarkand, Aeon Battle, and the final fight against Yu Yevon are some of my favorites. Also, I'm the only person in the world who liked Otherworld, apparently.
Beyond that, it's just obvious staples like Zelda, Metroid, and the like. I don't feel I need to go into detail there.
I'm sad to say this, but I've never played SotC. I think I need to.