I haven't heard much music from SCIV. But I do like the music from SCV. It doesn't really portray the feeling of a battle well, in my opinion (except for a few tracks). But composition wise, I think they tracks from SCV are amazing. C'mon... who doesn't like dat dissonance in Nightmare's theme? c:
Haha, he's an awesome character. Out of all the characters I've used so far, I have fun playing with him the most. lol It's a challenge getting used to him but I'll get better sooner or later. :P