If you're talking about the Miles Davis Tributes, here's my opinion.
The Tributes sound AMAZING with Jazz, hip hop, RNB, and anything acoustic (folk rock, acoustic rock, vocal heavy music).
Classical music fares relatively well, although the coloration of the tribs is noticeable, it will be pleasant but not an "Accurate" listening experience which for classical perhaps is of important.
I've actually had good experience with electro music on this IEM. I listen to a lot of house and edm music, although perhaps not dubstep, pretty similar. I mean, it's an IEM, so you're not going to be feeling insane heart shaking bass, but I really enjoy listening to house music on my MDTs.
The MDTs also do really well with rock music.
Honestly I could imagine the MDTs not bringing out the most in things like metal music or other sharp, highly produced types of stuff, but if you've got music tastes like mine, the MDTs are amazing.
My complaints with the MDTs lie in their build quality (my strain reliefs both broke on the same day, I tried to glue them back but they just rip again), the microphonics, the heaviness, and the flashiness (not necessarily bad although I can't help but feel a bit dumb with two golden plugs coming out of my head).
Overall, amazing sounding IEM, the reason I'm trying to find similar ones is because the sound is amazing but the build is not quite so.