2nd Solar Cattle trough I have installed on our Ranch. Tried to go the cheap route at first; Buying cheap pumps (Online from a company that is named after a River in South America) and using old solar panels. We ended up pulling the well almost every 3 months and replacing the pumps.
My first RPS solar pump has been running non stop for over a year with no issues. I just installed a second and expect the same. Easy to setup and so far... low maintenance.