Greetings and welcome aboard the CF, eskonp.
Quoting Peggy Hall, the “Head Mistress”: “Best manual toilets: Raritan
PHII (PHC is the compact version that uses the same pump) or Lavac. Don't even THINK of adding an electric motor
to either one!
Practical sailor recently rated the Raritan Marine Elegance "best in show" among macerating electric
toilets and the Raritan SeaEra "best budget