+1 on never having any problems whatsoever with E10. And that's over the last 20 years in all my motorcycles, cars, trucks, lawnmowers, and collector cars.
Oh, and quit bashing the farm states for ethanol. If you will remember, it was introduced to us all as a result of Federal and California clean air standards. The refiners had been adding MTBE as an oxygenator, and then found out it causes cancer and was showing up in our drinking water. So they hurriedly chose to mix ethanol in place of the nasty MTBE.
If you want to place the blame, then you should thank Big Brother and the Republik of Kalifornia. Sticking it to the Arab oil states doesn't hurt, either.