fastpencil, #64 is great. Could you make it so that the inner part of the flame inside the globe either is the color of the outer flame or modify it so that it looks like a globe. The reason I say this is because at a glance, it looks like a basketball but if we can remove that perception but clearing what exactly that is, it will be absolutely wonderful.
#63 and #62 are also really good. I will get some opinions from my associates but my initial impression, #64 stood out immediately.