I think the most attactive type of facial hair is a beard. Personally, I prefer a clean shaven face, but if I needed to choose a type of facial hair, I would choose a beard on a man. Mustaches are not in style right now unless then man is trying to be ironic, but I don't think it is attractive.
Goatees are also not in style and I do not think goatees look good on anyone. Other types of facial hair, like soul patches, or other different patches of hair are not attractive either.