Milwaukee 0721-21 Cordless Right Angle Drill and Driver Kit
I selected this drill as my number one because it's a real powerhouse. While most users won't need all the power this unit can provide, for those that have to bore large holes in dimensional lumber, this one can't be beat. The 28 Volt motor produces 1081 in-lbs of torque, in two variable speed ranges, 0-400 RPM and 0-1000 RPM. With all this power, you can drill 1/2" holes in steel, or 2-9/16" holes in wood. It comes complete with the battery, charger, case and a side handle.