Why don't you read this article someone wrote a couple years ago? It compares the different types of watering systems. It compares the pluses and the minuses of each system.
https://www.backyardchickens.com/articles/diy-chicken-waterer-3-compared.72579/
https://www.backyardchickens.com/articles/diy-chicken-waterer-3-compared.72579/