I can understand liking their character designs, but the actual singing?
Maybe it's just me, but their singing is absolutely... horrible. As to be expected from synthetic voices I guess. I just don't understand why this is so big in Japan. Then again, I don't understand Touhou, either. <_<
There are just a few songs that are decent, but aside from that... yeck.
Well, whatever, I guess I just won't ever understand it. I'll just stick to Nightwish, Phoenix, Keane, etc.