I use 25:1 (5.4 oz or 2/3 cups) 2-stroke oil in a gallon can of premium gas and run the whole gallon through for break-in.
From there I run 32:1 (4 oz or 1/2 cup) per gallon of good gas.
It's not the higher octane you are looking for, all octane does is keep high performance engines for pre-firing and 'knocking'.
The highest grade fuel as mentioned above usually contains less Ethanol.
Ethanol is not our friend with 2-stroke bikes.
Considering it is only pennies more why not right?