I voted Folk simply because most of the bands I'm listening to at this moment are Folk based, however my favorite subgenre changes. I also really love Black, Doom, Death, Trad, and have been starting to appreciate Thrash.
I voted for them all because you left out sludge, industrial, avantgarde, metalcore, crossover, etc - as well as leaving no way of differentiating between subgenres ala brutal death versus melo-death or the variations of doom and i feel like being picky; good attempt though
death metal because if you don't like it you don't like extreme metal.
prog because music can sound different then your average generic metal band. I don't really like straight up prog but prog mix with something else is good (Enslaved, Amorphis, Edge of Sanity, Unexpect, etc.)
stoner because the groove and the catchy riffs make it more than normal music, it create a cool atmosphere.