Interesting reading, very informative.
I have a 300 gal tank in my hanger which a bulk dealer fills for me, I use high octane and test for ethanol each time. So far nothing has appeared. I also fire sleeved all my fuel lines and have never had a problem. I live in the north where we seldom get above 80f so I don't believe vapor lock is an issue.
What I take from what I have read is that auto gas has higher volatility, it evaporates quicker which would make it "better" fuel as only gasoline vapors burn so the easier it evaporates the easier it will burn?