Metabo's PowerGrip II 7.6-volt lithium-ion cordless screwdriver offers nearly twice as much power and drives twice as many screws per charge as the company's nicad-powered PowerMaxx Plus. The tool, which weighs 1.6 pounds and is 5-3/4 inches high, delivers 141 inch-pounds of torque and no-load speeds of 0 to 250 rpm and 0 to 750 rpm. It includes 20 clutch settings, a drill setting, a 1/4-inch keyless chuck, aluminum die-cast housing to dissipate heat and increase durability, a two-stage gearbox, and an electronic brake. Price: $229-$249. 800-638-2264.