Regarding hardstyle, I was buying it before I knew it was hardstyle, I just thought it was really hard hard trance and it was going at the end of my hard trance sets.

Because of my love of trance I always tend to buy more of the melodic stuff with the ripping evil riffs.

Of course there's progression in a hardstyle set, the music just gets harder the same with any hard set. More percussion, bass, darker melodies, more going on in the record.