I agree with what everyone is saying but think of it this way, DJ's that are commercial kind of have to be, they need to keep the crowd. Little by little they can start developing their own sound it's hard though because so many people don't appreciate good music anymore,it's a shame. You can start out w/ having your own sound and most likely no one listening, or get the people to listen by playing what they want(which is mostly commercial)than get them to really like the sound that u develop. I give all DJ's respect it's a hard business.