The short version

Brushless motors are more efficient, generate less heat, and last longer. For occasional weekend use, a brushed motor is fine. For daily professional use, brushless is worth the premium every time.

Why the difference matters

In a brushed motor, carbon brushes physically press against a rotating commutator. Friction generates heat and wears both parts down over time. In a brushless motor, commutation is electronic — no contact, no wear, better efficiency.

A brushless motor can last 6× longer than a brushed equivalent under the same load.

Runtime

Brushless motors typically deliver 25–50% more runtime per charge than brushed equivalents. The electronics can also modulate power delivery — giving max torque when needed and reducing draw when the load is light.

The practical upshot

If you're drilling drywall anchors on weekends, a brushed drill is fine. If you're a tradesperson driving 200 screws a day, brushless will pay for itself in battery runtime and tool longevity within a year.