I was looking for techno style music when I came across dubstep style music. Some is heavier than others, I think Bassnectar is a good middle ground to listen to that beautiful wobble bass while still being more techno/dance oriented (imho). I loaded up on quite a few songs, this one being one of my favorites. Don't forget to listen to the higher quality versions.
Then there's much filthier dubstep, like Ry Legit.
Is Halo dying? Not in the sense of gasping for breath and dragging itself across the floor, but in the sense of being infected with a disease that slowly, but surely, kills it.