Non-ethanol 90 octane is very plentiful in our area.
Fuel hoses and other rubbers and plastics on older engines (small engines) weren't designed for use with alcohol, so when phase separation occurs and the fuel "sits" in those materials, it causes deterioration. From a general use standpoint, if you use it fast enough, there are no detrimental effects of ethanol-mixed fuel.
That being said, all non-motor vehicle engines we own gets non-ethanol fuel. Stabilizers don't work, and Seafoam as a stabilizer is about as useless. Lots of stabilizers have alcohol in them, which is a head-scratcher when you consider that you're trying to mitigate the effect of alcohol. But of course, you can eliminate the need for stabilizers if you just use non-ethanol gas.
Some would say that they don't want to spend the extra money on non-ethanol fuel, but will just get the 10% ethanol stuff and use stabilizer. Well, stabilizers ain't free. In all cases, the cost of using 10% ethanol plus stabilizer is more than just buying non-ethanol fuel.
I used to run non-ethanol in my Z71. It consistently got 10% better fuel mileage. The fuel was about 15% more costly at the time.