After months of using the Red Lion RJS-100-PREM jet pump, I can confidently say it's a solid performer with a few caveats. The cast iron construction gives it a reassuring heft, and the 1 HP motor delivers consistent 60 PSI pressure for my household needs – showers have never felt better!

Priming was initially tricky until I rigged a clever solution: connecting it to my irrigation system via a valve. Once primed, it purrs along quietly (unlike my neighbor's rattling pump). The adjustable pressure switch is a game-changer – tweaking it to 40-60 PSI took exactly 4 clockwise turns (each turn = ~2.5 PSI, as I learned).

Two quirks stand out: First, the motor runs HOT. I've taken to checking its temperature religiously and agree with other reviewers – Red Lion should upgrade the cooling fan. Second, winterization is non-negotiable; I epoxy-coated the pump neck after reading about freeze-related cracks.

The included pressure switch seems to be a common failure point (mine worked but others report issues). For peace of mind, I keep my old Square D switch plumbed in as backup. At $300, it's not perfect, but when properly maintained, this pump outperforms units twice its price.