This is a very elegant design. I like the 3D look and the color choices. I would like to see another variation on this logo. What if you were to change the color scheme? or if you were to alter the logo, what variation would you give it?
After looking at the color variations, I think you got it right with the first version. I didn't really like the other colors as the flames then became a double helix or something that felt disassociated with the the concept of the team burn-up theme.