Pros: durable; water didn't freeze; easy to clean; non-corrosive; has legs on top for stable filling
Cons: The "flip" takes some practice.
I will admit that I have managed to spill a bit when trying to flip this over. The trick is to make good and sure that all 4 of the little tabs are secured and then to flip in the direction that keeps them secured. (If you flip the wrong direction, the tabs will slide out and the top won't be secure)
I do this just outside the coop, so that if I do spill, I am not making a mucky mess inside.
I have heard reviews for a similar waterer that said that the handles can fall off. I haven't had this happen, but I don't carry it too far, and I try not to do much moving to prevent dislodging the tabs. I have mine set on 4 paver stones so it's high enough up not to get bedding or dirt kicked into it, but isn't relying on the handle to hold it up all the time.
This one has survived 2 winters and shows no signs of falling apart. If it were to conk out, I would buy another.