Like he said!

Remember that the weight of the plane and the prop you select to match the motor are the biggest influencing factors.

Think that the prop you select determines how much power is consumed and how fast.

The manufacturers specs in turn tell you how much "draw" the ESC and motor will tolerate.

The idea is to select a prop that keeps the motor and ESC under the limits, while giving you the best mix between flight performance and run time.

You can sacrifice run time for performance, or vice versa.