For me, he's a mixed bag. He is undoubtedly a very skilled producer. Some of the basslines he's come out with over the years just astound me. E.g. Alter Ego - Betty Ford Remix. I like the original tune, but his mix adds a bouncy, funky bassline that you just cannot resist. He seems to be able to perfect the ablance between funky and skippy enough to get people up and dancing, yet remaining tough enough to not lose his techno credentials. I don't, however, like his vocals. Some of them are ok, but at some points they are so gratuitously rude it just seems like a teenager desperately trying to shock his parents with bad language. Seems pretty unnecessary when you've got a monster of a bassling ripping through the speakers anyway!!!
All in all, I definitely rate him!!