How to choose the best Ping Pong Balls?

As the title shows, please let me know how can I choose the best ping pong balls.

Make sure the ball, you’re going to buy, has a mass of 2.6 maximum and a diameter of 40 mm.

For further and accurate information, I would like to share a guide that may help you. https://pingpongacademy.org/best-ping-pong-balls/ Thanks!