Sioux Steel Hay Max Feeders

I'm preparing for the winter months and looking to implement new hay feeders. I like the Sioux Steel Hay Max systems, round and square. I like that they have a tubular suspension rather than chains. Looking for opinions on these from actual owners. Specifically I want to know what was your cost? Stability? Durability? Hay waste? Cows keep their heads in?

This set up is in small feed yards so the bale wagons are not feasible.

Sioux Steel Hay Max Feeders