Research showed me a wide difference in pricing and features, supporting the notion that you get what you pay for whether you need the feature(s) or not. It is an expensive unit, but I was unable to find a disposal with comparable features. 

The Insinkerator is heavy and very quiet. My plumber had issues with the install. He was unable to remove the sink flange from the previous install.as it apparently was glued to the sink. Not wanting to damage my sink, the plumber mounted your disposal to the installed flange. The machine works well though the existing flange is shorter than the one provide by InSinkerator.