Been hanging lots of drywall this week, grumbling every time I sink a screw head below the paper. After a day or so, Jean hands me the impact driver rather than the regular cordless, thinking that one drives screws and the other just drills holes. So after explaining that using the impact driver on drywall was like swatting a fly on a screen window with a 2x4, I thought maybe I was being a bit harsh, and decided to try it. Works great. Better speed control than a regular driver, so I'm only over driving one or two screws every two or three sheets. Wouldn't do for a pro getting paid by the square foot, but works great for the rest of us.