The 7 Gallon Femonsters are a great, inexpensive solution.
They run $33 and have a wide mouth and are PET plastic, so no oxygen infiltration.
You just use a soft washcloth to clean them.
The lid seals are a bit of a pain, but easy enough to figure out.
They also melt at 160° so boiling water isn't an option.
All and all, they work great and can go between beer and wine because the don't pick up any aromas.
Brian