I bought this disposal in November 2019. It has worked beautifully and quickly, and the
stainless grinding canister is easy to keep clean. The only reason I gave it 4 rather than 5 stars is that it was very difficult to install by myself (and I'm both a mechanic and electrical tech) due to weight and an overly stiff and complex mounting procedure. The mounting hardware needs some re-designing. 
Overall, it is a very good product.