I'll talk from the DJ side of me; I honestly don't like his music a lot, his beats are really repetitive, he doesn't experiment to much and he uses relatively bad software for such a popular producer
EDM fan side; His music swallows you, he knows how to use the programs and he has some really good tracks
Ranting side of me; To much people consider him a dubstep producer, HE IS NOT. The people who say he's a dubstep producer should go bury themselves in a ditch and die. You do not know the meaning of the word if you even consider Joel a Dubstep producer, same for Skrillex.
Overall: He's not a bad producer, he just needs to work more.
