I'm still a complete noob compared to most of the music lovers I know. I've been buying/selling gear over the past three months to get the right headphone setup, and I've hit a point that sounds very good. As of now my playlist is almost entirely hip hop and classic rock, but I plan to delve into a lot of different genres now... it's been a slowly accelerating process, but expedited by the right gear. In a year or two my collection (and tastes) should be much more diverse.