I have done both and am still not sure which one I prefer... what do you think? The galvanised seems to last a lot longer.... smallest I can find is 2 gallon ... was thinking that the galvanised might be better with winter not that far off and we get pretty cold, might be nice to invest in a heater for the waterer... can't do that with plastic... What do you folks who are in cold climates do? I just moved back to CO and have not had chickens here yet - am more used to dealing with the heat in SC!
