I mean seriously.. if it causes us to use more gasoline to go the same miles-- why are we doing this?
My results are pretty much the same. I switched a few years back to non-ethanol gas - I use "premium" non-ethanol. I end up saving a tiny bit of money with the extra mileage I get and my mid-90's vehicle runs better (IMO).
Definitely NOT scientific proof, but it works for me.
It is "cheaper" to fuel up with E10 or whatever - i.e., I could fill my tank for less cash (and that is exactly as far as most people think it through) but the reduced mileage kills it for me.
Happily, a local station I stop at anyway stocks non-ethanol fuel - I don't know if I'd drive across town to fuel up or anything like that.