Yup. I raced with 100LL for years. Main reason was that I felt I was getting better fuel quality control. Another nice benefit is that it evaporates completely, leaving no oily residue. This is handy when using it as a cleaning fluid. For example, if someone were foolish enough to soak some Oil-Dri with 100LL and brush it back and forth over oil stains on a concrete floor, that someone would end up with a nice clean floor.
I also have the tank of my seldom-used home standby generator filled with 100LL on the theory that it is formulated to be stored longer than standard pump gas.
Great stuff, that 100LL.
Any motor I have that is not late model emissions equipted gets 100LL for long term storage.... From 10 HP generators to 600HP snowblowers...