Some of the best-reviewed shop vacs are the Craftsman 9-17761, Dustless Technology's 16003, the Koblenz WD-16K and the WD1851 by Ridgid. Each of these models received strong reviews from Popular Mechanics.
The Ridgid WD1851 has the best overall review on PopularMechanics.com. The WD1851 is praised for its unique blend of power and quietness, and it features a hanging pouch on the tube-steel handle that is great for accessory storage. The 9-17761 by Craftsman is another one of the best-reviewed shop vacs that impresses critics with its 20-foot power cord and the strong connection between the hose and the tank. Dustless Technology's 16003 receives high marks for its almost entirely dust-free stream of exhaust air.