The 2nd voice sounds like a cross between the Starcraft 2 Ghost and a Firebat and it sounds really cool, never thought I'd think of a the Ghost, but with a flamethrower or something. I liked voice 7 and 12 were really good and I enjoyed them. The other ones seemed to need more work but it's probably just something along the lines of just doing them over and over until it sounds right I guess.