I have two of these, simple yet works great to fill the Arbor rain water bags. I fill two bags at a time and they really are easy to use. When I'm gone my wife easily uses them to fill the bags and has had no issues. They are plastic so you need to think about that but I like them for the price.
Allows me to fill the tree irrigation bag without getting all wet -- and without having to stand (bent over) for five minutes (each bag).
Works very well