Have bought 2 for my goats. 1 in January 24. The second in December 24. They both worked great their first season. But when trying to start the next season, the seal that separates the water and the heater, had broken so water was getting into the heater. In turn, frying the heater. I would just go with heated plastic, even as brittle as it can be. At least it will work

I have purchased five of these buckets over the past three years. Three of the five have shorted out within a year of use. The design has the chord coming out the side of the bucket, and as much as we try to prevent it, the chord rubs against the horse stall walls. We also have the electrical chord run through a hole in the stall wall near to the socket on the outside of the stall wall, and the chords don't seem to like any tugging of any sort. Between the rubbing or the tugging, they short out. So, if you don't ever need to move the buckets maybe they're fine, but for practical, real-world use, they're poorly constructed. The other problem is that there is a thin separation between the heating unit's holding area and the bucket. On three of the buckets, a crack lets water into the heating unit area. It does not seem to affect the operation of the unit, but I don't know what chemicals or other issues that's introducing. These buckets are expensive, and they just don't hold up to regular use in a working horse barn.

Initially didn’t work, but replacement did

Heavy Duty buckets for the winter. Have multiple of these in my barn. Good quality.