We purchased this grinder in Dec 2021 and it worked as advertised until Feb 2022. The grinder started to get loud so Kitchen Aid replaced it. The grinder Kitchen Aid sent as a replacement only lasted 2 weeks. It started to report Err2 which according to the documentation means call the vendor there is no fix. Kitchen Aid is replacing again however after reading the reviews this sounds like a known issue. The company is not pushing back when we call with the issues however after experiencing 2 issues with the same model I am thinking this model is not robust. We will try one more replacement and if we experience an issue it will be time to turn to another brand with similar features. We really like the quiet and anti static features. 
When it worked it was easy to use and had terrific performance.