Yeah I wouldn't count out happy hardcore just yet. We get new artists and DJs every year. I went on the last day last year and I didn't hear much of any house. Lots of trance, drum and bass, electro..etc. And I did see a lot of kandy ravers.
some non-house DJs from 2007
Bad Boy Bill
http://www.youtube.com/watch?v=rYeXnBrLCvI
Jeff Mills
http://www.youtube.com/watch?v=itUmra5EbpY