I purchased this appliance about 2 weeks ago and have used it every day since.  It is SO quiet.  The blender has so many options and it is so easy to select the option you need.  One of the best features is the self-cleaning feature.  No more trying to get under the blades and perhaps nicking your fingers in the process.  The cleaning gets to the lid and cleans it as well.  The smoothies and shakes I have made are mixed perfectly.  Great appliance--but what else would you expect from KitchenAid.