Sport Aviation, the monthly magazine of the Experimental Aviation Association has just concluded a 3-part tutorial on this very subject. Carol and Brian Carpenter write a regular monthly column titled "Technically Speaking" and the August, September and October 2019 editions have addressed this topic in great detail. The magazines are available online, but I don't know if they are only available to members.
As an aside, I joined to get cheaper tickets to Oshkosh back in 2009 but have maintained my membership for the wealth of technical info online, and to get the monthly magazine which I rate as the best I have ever seen.
My choice of fuel? Nearly always Avgas - mainly because I only have to push the plane out of the hangar to the card swipe pump. I also consider the price premium cheap insurance in that I am buying a known, safe product. I have used 98 Premium Mogas when travelling, but am wary of what it might contain. My 1980's Subaru engine was originally built for leaded fuel and I haven't had any trouble with Avgas. Oil and filter every 50 hours, and check the platinum tipped spark plugs. Never had a fouling issue in over 800 hours.