I belong obviously to the many "victims" of lousy ORAL-B devices ((hose broken, Rep. More expensive than this unit ... !!!) The already meager "beam" of ORAL_B devices is achieved here by the softest level. The middle setting is perfect, the extra strong "shoots" out the last remnants. The tank may also like to be larger by 50% - but no matter, now I want to hope that the device has a corresponding life.