I run everything I have with premium (lawn mower, snow blower, chain saw, minivan, pilothouse, 94 chev 3/4 ton) just because my mileage increases about 2mpg that makes up for the price. Not only that, but my fuel tanks don't rust out, fuel lasts longer in a jerry can and my small engines start so good after sitting for awhile.
I could care less either way, but in my brief time apon this earth, that is what is working for me. However I do buy my gas from a gas station where I do know the owner and I know it is premium. I believe 80 percent of the companies put the same crap gas in all their tanks then sell it out of a special hose for more money.
Just my 2 cents