In all honesty, I enjoy all types of music to some extent (except country).
As far as the ones I mainly listen to, I enjoy classic rock and some modern rock. Favorite bands include the Red Hot Chili Peppers, the Black Keys, Aerosmith, and Foreigner.
Recently, however, I have been listening to more and more video game music. I prefer some of the older music, mostly N64 and earlier. I love the music from the Kirby, Donkey Kong, and Banjo-Kazooie games (Grant Kirkhope is a god).
And Eurobeat Brony is pretty good too