Bosch 35w v.s The £10 drill motor

What are the differences between the bosch 35w and £10 drill motors on 12v?
Also are the bosch's better for the money?

Drill motors generate more power. This is usually around the 100w mark depending on the motor. The boschs only give 35w and so are less powerful. They are harder to implement as you have to make a cutom shaft for them. They are however smaller and the right angle design can be advantageous in some robot designs.