Painting Madness - Problem!

After a short vacation I'm back and ready to post! Been busily painting and I've run into a small problem. I'm working on the Chaos Warrios for my fire themed Warriors of Chaos army and I need to decide which colour scheme to use for the flames on the cloaks.

I'm leaning towards II myself, but I'm not sure. Which do you think looks better? The cloaks will stay black, albeit with highlights of course.

I'd show you the front of the models, but that's pretty much nearly complete, so I'll save that for the end of the month ;)

Thanks!