After rigorous testing by the Hammacher Schlemmer Institute, this slow cooker earned the "Best" rating because it produced tender, succulent corned beef and automatically switches to a warming mode when cooking is complete. The best slow cooker received a perfect score for quality of food; corned beef was tender and juicy and potatoes and carrots were fully cooked yet retained good texture, while lesser units produced overcooked, dry meat and soggy vegetables. The unit simmered beef stew to 150° F after 2 1/2 hours, while other models registered only 137° F--3° F below the minimum internal temperature recommended by the USDA. You can select one of five cooking settings with the turn of a dial and a warming mode automatically activates when the preprogrammed cooking time is achieved, ensuring food doesn't overcook yet remains at the optimal serving temperature for up to four hours. The best slow cooker has a 7-qt. ceramic pot that accommodates up to 10 servings of stew and a 10-minute to 10-hour timer. 10" H x 14 3/4" W x 12 1/3" D. (17 1/2 lbs.)