Are you getting it to replace MTBE? If so, ethanol is the lesser of the two evils.
We used to have to get MTBE/ethanol fuels in the winter for air quality reasons in the Greater Seattle/Tacoma area. A few years ago, the EPA said we'd cleaned up our air enough we no longer had to have laced gas at all.
In the US, they're required by law to put a decal on the pump if the fuel contains 10% or more alcohol. So, I don't buy gas from stations with the stickers on the pump. Around here, that's ARCO & Union 76.
I used to run ARCO gas in my cages because it was cheapest, then I learned of the things that can happen from running alcohol laced gas from a friend who spins wrenches at a GM dealership... and every car that came into the shop with FI delivery problems was an ARCO customer. (76 hadn't started lacing their gas yet back then.) Once I started staying away from ARCO, I noticed the cages got better mpg and had better snap. So far, the B12 has only had one fillup with laced gas, and that was when I'd stopped in a 76 station - and didn't noticed the alcohol sticker until the tank was almost full.