I have three 6 Plus plastic cans from Blitz.
Blitz USA: Fuel Containment and Accessories
I bought them before the Y2K scare so they are over 7 years old and not a hint of failure. I usually keep them full all year, as I have a generator and want a good supply in case of power outages, which are more frequent in our neighborhood than I care for.
I just put a dose of Stabil in there and have never had a problem with water or bad fuel during the winter, when I can store it for up to 5 or 6 months before usage.