After much pleading with my husband, he gave in and bought us an additional floor polisher that came with our S9 airbot. I do not harbor any resentment toward this couple because they nearly entirely relieved me of my responsibility to clean on the weekends. It is no longer necessary for me to wash the apartment or vacuum it because there is no longer any dirt, dust, or crumbs here. As we share an apartment, we rarely have free time to mess it up because we are both so busy working. Certainly a score higher than 5.