Any elctric toilet that uses raw water...
..is gonna be noisy...'cuz it's the intake pump, not the macerator and discharge pump that makes all the noise. Only those equipped with the optional solenoid that draws flush water from the onboard pressurized supply are quiet.As has been previously noted, I'm not a big fan of Par/Jabsco products... they cost less than any others, but you also get what you pay for. However, when it comes to manual-to-electric conversion kits, they're the only ones who offer a complete pump replacement with a pump that was designed from the ground up to BE an electric pump, not just an add-on motor that replaces the pump handle and nothing else--something that only turns a fair-to-excellent (depending upon brand) manual toilet into a poor excuse for an electric toilet. Since the Jabsco conversion, is about the same price as an add-on motor, it's prob'ly the best bang for the buck.However, for not a whole lot more money, I think the new Raritan Sea Era electric macerating toilet is the BEST buy...unlike the Jabsco conversion, you can get it with the fresh water solenoid option--which in addition to being quiet uses far less flush water and far less power..