I think a lot of what you end up thinking of a competitor’s music selection just comes down to your personal tastes in music, but in general I think players who are really performance-oriented and have polished presentation skills tend to also put a lot of thought into the music and do a good job of choosing things that work well with their style. Players like Tomonari Ishiguro, Mark Montgomery, Kazuaki Sugimura, and Rei Iwakura come to mind (and plenty of others as well) as far as choosing stuff that, whether I would normally listen to it or not, does a good job of complementing performance. Tomiyuki Watanabe probably also deserves a mention for his AP division stuff.