E-10 is not all that bad once users get use to the E-10 storage needs. Can't be stored in open containers at all. In the last year here my biggest fuel problems has been stale and fuel left in open containers.
Just fill an open pint glass jar and sit it out on a humid day and watch soak up the moisture when E-10 is in it. Here it looks like 1/2% milk before the water and ethanol settles out.
Personally I have been using E-10 for many years and just don't have the problems that many users have. Now long term storage is a problem but it is also the same with regular not ethanol fuels.
Water in the fuels here are mostly introduced by the user adding fuel. One time here I got nearly a quart of water in 5 gallons that I just purchased from the fuel depot. What worst have gotten three times water in my vehicle fuel tank which is a pain to remove when they are full of fuel as they provide us no way to drain them.
