Tool Test: Impact Drivers

Price: About $70 (charger and 2.6Ah lithium-ion battery sold separately for about $125); portercable.com

Our two cents: "Tied for best fastening speed with deck screws. Its soft-side case was one of the best carrying cases of the bunch."

Highlight: Works with both lithium-ion and nickel-cadmium batteries.

Test results: Drove fifty-three 4 ½-inch SDS screws on one charge. Drove a 6-inch SDS screw in 19 seconds. Drove a 2 ½-inch deck screw in 14 seconds. Drilled a ¾-inch hole in 4 seconds. Average recharge time: 50 minutes.

Tool stats: 4.2 pounds; maximum ipm: 2,800; maximum rpm: 2,900; maximum torque: 1,600 in.-lbs. Includes built-in LED, three-year tool warranty.