I purchased this unit to replace another Kitchenaid Burr grinder.  The older unit was very noise, had a glass jar to collect the grounds which suffered from "static cling" but was much faster.  The older unit looked like a mixer.  The new unit is much quieter.  The collect container is made of plastic, not glass, so there is no static cling

The "problem" with this unit it grind much less coffee than i think it should.  I have the grind setting at 45 for done drip and set to 5 cups.  I aim for around 9 grams of coffee per cup (six ounce cups in the coffee maker).  The 5 cup setting grinder delivery only about half the coffee required to make an excellent cup of coffee.  Thus I have had to dramatically increase the grind time.  I am a very surprised that Kitchen Aid has not worked out an algorithm to have the grinder adjust grinder time based upon how size of the grind setting.