This unit repaced a 16 yr-old dishwasher of a different brand, that gave us excellent service for all of those years.  This dishwasher only required a very short learning-curve to get the result we wanted ( we read the operators manual and experimented with different settings);  everything comes out of this dishwasher sparkling clean.  Oh, I forgot to mention how nearly silent this unit is - unless we incorrectly load it with something that might move around during the processes, it is difficult to realize that it is actually running