J.D Power and Associates ranked Miele "Highest in Customer Satisfaction with Dishwashers". The Meile dishwashers are so quiet you hardly know they are running. Also, the dishwashers come with a money back quarantee which states, "if you are not completely satisfied that the dishwasher is quieter and cleans better than your previous unit, Meile will refund the full purchase price of the product."Find out more at www.mieleusa.com