human
Which is better for my needs: a hammer drill or an impact driver?
assistant
A hammer drill will be better suited to tasks such as drilling holes in hard materials, whereas an impact driver would be more suitable for driving screws into soft material. Hammer drills are typically used for larger-diameter holes and require less force than an impact driver, while an impact driver can provide greater torque when driving screws. Ultimately the decision depends on what you need to do with your drill.