The newest of the Panasonic cordless drill drivers is a transcendent tool. It has an interchangeable head that makes it into an impact driver. At first I thought this was a silly add on, but quickly realized that impact drivers are amazing. They allow you to drive 6-inch lag bolts with one hand, and remove seized nuts easily. However with the non-impact head you canbe gentle with small wood finishing screws, orgently tightening nuts. We have both kinds of drivers in our shop but when they cost $300 each its nice for most people to get both types in one tool – this one.
Panasonic EY6431NQKW 15.6- Volt 1/2-inch Cordless Hyperformance Drill Kit