I've ground probably 80lbs of meat with mine this year. It's not the fastest, and it doesn't grind too pretty, but it also doesn't take up any counter space in a small kitchen.That Thing Runs Like an Evinrude and will Grind about anything. You'll like it.
Word of caution, be really careful if your kitchenaid has plastic gears. Old ones are metal, new ones are mostly plastic unless you buy the "pro"or "culinary" grade (expensive) ones.