Just to chime in on small fermenter options as I have several. I really like having a spigot on small fermenters (well, on my large fermenters too).
- My favorites are the PET Little Big Mouth Bubbler (LBMB) fermenters with spigots sold by Northern Brewer/Midwest Supply. They hold a solid 1.5 gallons, so there is plenty of room to get a full 1 gallon of finished beer. They are not the cheapest of fermenters though.
- The 1-Gallon Fermonster fermenter is also a nice small fermenter. It is much thinner than the LBMB and tops out at around 1.2 gallons up to the lid. They are a little cheaper than the LBMB.
- I would not recommend the glass versions of the LBMB fermenters, or at least not the ones that are cut for a spigot. The fermenters are quite heavy and a bit awkward, and the hole cut for the spigot is up too high and very roughly cut. I had to have one of mine replaced because it was cracked around where the hole was cut.
I did pick up a 2 gallon food grade bucket and lid from Home Depot a while ago, but I have not gotten around to trying it out.