My preference seems to go in phases.
I've got a fair amount of diverse styles on my computer, but I really need to be in the mood, and thus, my media player of choice rarely goes on shuffle. I actively need to pick music I want to listen to. It's also why radio never appealed to me.
I will say that I have a slight inclination to more extreme genres in general. Grindcore, IDM, Industrial. Though a few styles less on the fringes apply as well. Yet I also enjoy some classical stuff or movie scores and even have the occasional mood where I'll check out some pop music as well as some significant artists from all decades. Heck, I even end up listening to rap or hip hop from time to time.
Sometimes I wish I could get into more genres overall, but there are plenty of genres that have little to no appeal for me aurally. I can appreciate the craft that goes in it and for that reason I will give things a go. EDM in general is a mixed bag; a few subgenres do it for me, while others... no thanks. In fact, I can like something so specific that I won't care for anything besides a specific album by an artist (regardless of genre).
I don't care that much for genres. I'm not picking things I want to like by genre-descriptors. I might however go by concert flyers and see what other bands are playing as support for artists I like. That's one of the easier ways for me to check out new things I guess.
Going through my music collection; these are a few names that come up
Beneath the massacre, Slayer, Despised Icon, The Agonist, Tech Nine, Katy Perry, Igorrr, Danny Elfman, MC Frontalot, Smashing Pumpkins, Rasputina, The Glitch Mob, Periphery, Knife Party, Amon Tobin, Insane Clown Posse, SunnO)))), Borgore, Venetian snares, Mayhem, Combichrist, Ladytron, Elvis Presley, Grossstadtgefluster, Depeche mode, The Mars Volta, Nine inch nails, Atari Teenage Riot... and the list goes on