The ultimate determination is how a soccer ball feels and performs for you on contact. A good soccer ball will not only be tough enough to hold up to your fast and furious play, it will feature a soft casing for comfortable heading, and durable stitching (if stitched). It should handle well, and have good response. Most good soccer game balls feature a poly-urethane (PU) casing. Most leagues prefer 32-panel designs for its performance value. Also check for a warranty. Your new soccer ball should come with a manufacturer's warranty against defects and damage caused by normal play.
Inflate soccer balls to the pressure of 6-8 PPI (pounds per square inch). A pressure gauge will tell you when the air is enough. Under or over-inflating a soccer ball will shorten its life in one way or another. When under-inflated, the ball will not be resistant to the impact of kicks. On the other hand, over inflation will stretch out the bladder and put pressure on the panel stitches.
Outside of PU and TPU, pretty much every other material used for a soccer ball’s casing will be specialized for either durability or responsiveness. When it comes to synthetic leather, the focus is also exclusively on responsiveness and this is by far the most responsive material used for a soccer ball’s casing. It is important to note that PU, TPU, and PVC are all often labeled as synthetic leather.
Latex bladders are one of the best materials when it comes to ball construction. However, with latex bladders, air won’t last as long as butyl bladders and will need more attention for proper inflation. Butyl-blend bladders hold in the air much better, but they are harder and less receptive in play. Mid-priced balls will usually have a mix of butyl and rubber. https://www.youtube.com/watch?v=c1SVcjYY6TE