Coreless Motor
Capable for every kinds of circuit surfaces & categories, owing to its well-matched design of response and torque setting.
Recommendable for circuits with large corners because of its smooth quick turning functions
Must be used for carpet circuit

Brushless Motor
Good for asphalt circuit with low grip, owing to its retainability
Recommendable for circuits with small corners
Useful for GP racing because of its power saving design

Remarks:
*Make sure to check the dimensions of servos to fit with your car before use.