I think QS orange balls are great! I have one son that did not play with orange because it came along when he was about to turn 11 and one younger son who has played a massive amount of orange ball. Orange ball is great for tennis. It helps to hook more beginners on the game and it makes it easier to develop strokes. I think the jury is still out on how long a player should stay with it. I would like to see green ball in the 10s for higher level tournaments.
Wilson 6.1 95s