Get E-free if you can. I mix 5 gal at a time and use in boat and gen only too.
Dont leave ethanol gas set very long. 90 days put in a mower and use up. It draws in water and goes bad fast.
E-free here is only a buck more a gallon. Here a e-free pump has a
RED handle.
If you cant get that. VPracing makes a a good premix.
Then there is the high priced stuff like Aspen. Stihl premix uses that stuff in theirs and why so high.
Can search near you for e-free gas on this website.
https://www.pure-gas.org/