Our 1991 model boat came with Rule pumps, for the main bilge and two shower sumps. Both do their job to this day, so my vote to replace, if ever, remains Rule. Quiet, efficient, reliable, stable, well organized, systematic, structured, well planned, logical, coherent, well regulated, well run, well ordered, orderly, businesslike, systematized, streamlined, productive, effective, labor-saving, cost-effective, energy-efficient, energy-saving, and fuel-efficient. Whew! Nuff said.