Prosquiet, easy installation, powerful, available from your local hardware, 5-year warranty
Best I've ever owned and easy to install, relatively speaking - some of us are not built for leaning down under the sink. Still, it was a 1-hour do-it-yourself installation, including clean-up. This unit is amazingly quiet and very smooth, tackling all our cut up vegetable bits and dish-washer waste with ease. Comes with all the fit-up requirements if you're installing one for the first time, or spares if you are replacing an old unit with universal fittings. Costs a little more than lesser models, but performs excellently.