Installed this unit myself and the instructions were very clear and straight forward.  The unit is so quiet we can't tell if it is on unless we look for the red light the unit shines on the floor during operation.  The dishes are cleaner than any dishwasher I have ever owned even the F&P!  We also really like the uppermost tray for small things. We use it for silverware so we don't have to bend over quite as far for the silverware.  Overall we couldn't be happier with the unit.  OK less expensive would be cool but otherwise its a GREAT unit!