I bought this machine based on the Consumer Reports evaluation of similar dish washers.  I'm so pleased with it.  The only way I know it is on is if I see the numbers in the display.  It is so quiet.  Initially I thought it would be too "big" for just the two of us, but since I only do dishes a couple of times a week it has worked out great.  I like the adjustibility of the drawer locations and tines as well as having a separate silverware drawer.