The 300 series dishwasher is a serious machine.  It is so quiet you hardly know it's on.  The third rack for solverware and utencils is an amazing game changer, freeing up room on the lower racks for more dishes.  The cycle is long, but the capacity allows you to get more in there and then run it at the end of the day.  And the indicator light projected onthe floor prevents you from accidentally opening it mid-cycle, since you can barely hear it running.