We bought this disposer to replace our In-Sink-Erator that dies after 4 years of very light use.  The new Moen appears to be encased in a lot of insulation.  The ring and the stopper are very attractive.  The best part was the attached electric cord which made it very easy for our plumber to install.  The only thing about this disposer, which is a little disconcerting is the loud noise that it makes, even with the insulation which our old disposer didn't have.  It sounds like a jet engine getting ready for take off!  But it gets rid of the waste!