While the vortex flame was as advertised and everyone really liked the overall look of the Halofire, I was very disappointed with the leftover soot on the glass surrounding the flame. We specifically purchased the Halofire Torch Fuel after reading the recommendations of the manufacturer, but it did not burn "clean" as advertised. There was black smoke while burning, as well as the resultant sooty glass. I now have a lot of clean-up to do on the glass and, frankly, what a pain it's going to be if that happens every time I use the Halofire.