I'm surprised that breathing the fumes would be toxic. After all, Rubbing Alcohol being sold in the first aid/medical section has certain implications, such as being rubbed on one's body? Or is this not the purpose for which Rubbing Alcohol is sold?

In any event, my preference is 190-proof Everclear, but it's so darn expensive. I mostly use SLX. I do get some soot on the bottom of my containers, but not so much that it bothers me any.