I received a Box of the new Double Fish Par40+ (Paris Olympics 2024) balls, just 3 days back, and I've had 1 session with them.. I've also played with the Double Fish V40+ WTT balls...
A few initial thoughts on the Par40+ ones..
- I did a spin test (spun of a clean 25mm table-top) on all 6 balls in the Box, and then all seem round
- The PAR40+ balls seem heavier than the WTT balls
- I like the bounce of these balls.. seemed very even
- Seemed to have okay rotation (spin) .. Not too much.. not too little..
- White colour (not too white) when new.. Lost little or no whiteness after around 12-13 games..
- Perhaps a perception thing, or could be the way my opponent was playing, but to me, it seemed like the ball came-on slower (Than the WTT ones) after bounce.