I love electronic music, though it somewhat annoys me when people say that trance, EBM, etc, are genres of "techno". They're not, they're subgenres of electronic dance music, and techno happens to be one of those subgenres. Basically though, techno is a form of EDM, but other forms of EDM aren't forms of techno.
Now if you're wondering which one is my favorite, I would definitely say industrial, along with its various deriveratives like EBM. I'm also fairly into 70s/80s synthpop (mainly stuff like Kraftwerk and Depeche Mode), and I like trance as well.
My least favorite subgenre of EDM is dubstep, since it's everywhere, everyone seems to be obsessed with it, and a lot of it is just really really dumb. Actually, scratch that; dubstep is only my second least favorite, as I do admittedly enjoy a few songs in the genre. My TRUE least favorite is dance pop, which I actually hate with a burning passion. It may seem odd since I already mentioned that I like synthpop, but the thing is, you simply can't confuse Kraftwerk with Lady Gaga. They may share a few elements, but one is on a waaaaaaaaaay higher level than another. ![Wink ;)](./images/smilies/icon_wink.gif)