This disposal replaced a 13-year-old Waste King. The InSinkErator is very quiet. It seems to be robust, as it weighs more than the Waste King. My better half has always had a batch-feed disposal and this fits the bill -- the cover must be in place in order to turn it on, so it keeps your hands safe. The sink drains water slowly with the cap in the drain position, but it does drain completely, just more slowly than you would expect. All-in-all, we're very pleased with the disposal and would buy it again.