#8: I like this version, but would like to see something with the flames incorporated into the logo. I think I might not be sold on the circular shape or sun imagery in the background yet.
#7: I like how this is a more conservative version. I'm not sure if that is the way I'm going to land on, but I do like having the option. Also, this is the color scheme that appeals to me most, with black as a major theme and the fire colors as highlights.
#10: Try and remove the circular shape from this and just have the entire background in black. I think the circle is what is really throwing me off. These could all look quite different with just a plain black background.