I agree with the speed core and the hardcore electronica...not a big fan either. I have to say am a really big fan of Chris Corner, formerly the brains behind the Sneaker Pimps and now known as the singer/writer of the band IAMX which I have posted quite frequently...just saw him preform up here in Portland Oregon...pretty amazing live show. The singer known as Moto Boy from Sweden did the opening act who sings sort of melancholic romantic songs...he has such a beautiful voice. As far as the ambient electronica and Trance music goes it all has to do with my mood....sometimes I can get into a "zone" and just listen and listen to ambient type music nonstop and other times I like more of what might be considered traditional although still less unknown alternative music.
Currently I am on a classical music kick...I dunno, I grew up being a huge David Bowie fan and still am. In my teenage years I listened to a lot of punk, then got into electronica bands like Mesh, Wolfshiem, Apoptygma Berzerk...etc. I like some Dubstep but I'm pretty picky as to the song...not a big fan of Skrillex for example.