Product review (5 stars): Very quiet and powerful
While replacing countertops and the sink, I thought I'd replace the 8 year old Insinkerator garbage disposal figuring it was getting a little long in the tooth and fate would probably have it die the day I finished the kitchen.  Researching disposers, the KitchenAid had a great warranty and the reviews raved about how quiet it operated.  My wife was very skeptical and couldn't really grasp the concept of a quiet garbage disposal, but after it was installed she's now a believer.  It seems to grind quicker but it really is amazing how it does it so quietly as well.  It's no easier or harder to replace than any other disposal, although even at a good price it's a bit more expensive.  For the small price difference, I'm glad to spend it on for the apparent good quality and lack of noise.