Stabil or Seafoam for long term gas can storage?

I have a boat, mower, generator and snow blower and treat every gallon of ethanol gas I use with Sea Foam. I do not drain the tanks or run the carbs dry in off seasons. I have never had to remove a carb to clean it - and the boat motor has 4 carbs. Been doing this for many years. And as far using non ethanol gas, it is very hard to find here and really expensive. More then the ethanol gas with the Sea Foam combined so I don't see a need in my situation.