I was not a big believer in the MP Rotors until my current home. I live in Texas with lots of rock and clay. Additionally my house is on a hill and I have between 7-18% grade throughout my yard.
The MP Rotors are awesome for these types of settings. The ground takes a long time to absorb water and since the yard is so steep it’s hard for the water to be absorbed. Using the rotors allows for the time to get the water into the soil.
My only caveat, as others have said, it twk s 3-5x longer to water. If you have any leak anywhere, such as the gasket with the pop-up you could have a large water bill. Definitely recommend visually checking heads up that very month.