[Hamstuh]

I was wondering what fuel type is really the ideal one to choose ?
With gas all around now containing Ethanol from regular unleaded to even premium. (At the very least everywhere where im at). Does it matter if I went the 87 route over 91 ? Seems like some people just say youll lose some performance and gas mileage. What risks come from 87 as opposed to 91 now that it also has up to 10% Ethanol?