This is just my personal experience so take it lightly.
Ethanol seems to pull a lot less waxes, fats, etc than iso. It also seems to be a weaker solvent of these byproducts. This makes winterization easier since it has an easier time forcing precipitation. Iso was just a disaster for me.
I went to @Shadownaught for my Ethanol and it’s working amazingly. They have good prices as well on some DN EtOH.