I'm using a Waterace R10L for lawn irrigation. It did the job just fine for one summer. I live on a fresh water canal and last fall, the water flooded the boathose about half-way up the pump.
I didn't think to try it until the dry season (I previously had a Meyers pump which was under water at least three times and still worked). The R10L only buzzes when I flip on the power. What would I need to check to see whether it's worth fixing? It cost just over $100. at Lowe's about a year ago.