As far as the topic at hand - I use non-ethanol gas, Stihl synthetic mix oil, and I run my saws empty as per the owners manual if they're going to sit for longer than a month or so.
Any mixed fuel that's older than about 3 months gets dumped in the truck gas tank and I get new stuff for the saws and lawn equipment.
My 2 stroke snow blower on the other hand gets non-E gas, whatever mix oil is on sale and I leave the fuel in it all summer...it's about 20 years old at this point and at the beginning of this winter it started on the third pull. Completely different carb design though...