As this thread reaches its end, my hope was to bring out the folks with both carbon and magnesium frames. Sadly, there was only one, but he had some good information. After owning aluminum and steel, I love my bike. How it stacks up with my future carbon frame, I don't really know. So be it. Thanks for the thoughts.
I've been on these frames for the last five years. And for what it's worth, none have caught fire.