The InSinkErator Badger 5 is a 1/2 horsepower disposal unit that sells for about $100 while the Badger 1 is a 1/3 horsepower disposal unit that sells for about $80. The Badger 5 has a 3-year in-home warranty while the Badger 1 has a 1-year warranty. They are both part of the "Standard Series" and are about the same size (11.5 inches tall) and volume.