What are the benefits of brushless motor power tools?

What is a brushless motor on a power tool?
The power tool comes with a motor that uses electronics to detect position and transfer electrical current into the stator, which is why brushes are not needed.

Brushless motors use electronic controllers to switch the current direction, which makes them more efficient and reliable than their brushed counterparts.

What are the benefits of brushless motors?
By doing away with the brushes which produce friction and heat, brushless motors usually:

• Brushless motors have fewer moving parts, which reduces the wear and tear and increases their lifespan. 
  
• More efficient due to the absence of brushes that often tend to wear out.
• Run cooler since they create less internal friction and heat. 
• Are often lighter and more compact than brushed motors. 
• Can more readily allow higher speed or increased torque than a brushed motor, which can result in an improved user experience.
• The absence of brushes in brushless motors eliminates many of the problems associated with brushed motors, such as wear and tear, maintenance requirements, and noise.