i have played with this ball for some practices now and this is one of the new balls that I think I like the most. the most of the ball feels round with a good bounce and this ball feels much harder compared to other poly balls i have tried. in some way it also feels heavier when playing and i also got the impression that there is less spin in the ball but that goes in general for all the plasticballs on the market, the quality is good but some breaks a bit too easy when hitting the edge of the racket but it’s very durable compared to for example donic’s new ball that i had to change three times in one match. the nittaku 40+ is definitely a step in the right direction.