Just use what the manufacture recommends and get back to skiing. Worry more about the food you eat, your ski, and your form. Even as a lowly 15 off skier I will always use what is recommended and move on with my life.
On my previous question, I asked about the non-e because the Ilmor manual recommends both 91-93 octane and non-ethanol fuel. I was curious what people would say. I’m aware of the correct technical answer that ethanol is fine in newer engines that run often. If you don’t run it often enough the ethanol will pull in moisture. Once the new Mastercraft is on the lift I’ll go for recommended octane throughout the season. At the end I’ll switch to non-ethanol for a few sets to get ready for winter. Beyond that, I’m going to worry about getting that line shorter and not the gas.