Accurately judging a table’s quality comes with experience. However, there is a quick test you can perform. A tournament-level table should be able to bounce a ball up to 9 inches if the ball is dropped from a height of 1 foot. All tables might not achieve this, especially outdoor tables. You can still use the bounce height as a measure of quality, and see how close to 9 inches can a table get. Bounce the ball on multiple areas of the table to see if the construction is uniform.