My preferred ball is the ProV1x but I will occasionally play other brands of balls I have found. I usually play a ball until I lose it which in some cases my be 10 rounds or more. I am not getting any younger and wonder if my game would improve by playing new balls more frequently. I also play balls I fish out of the water hazards that look like they have not been in the drink for to long. When do you replace a ball ? You know a brand new ball will be at it's peak but it's performance has got to diminish with time. How many times can a ball be struck before it loses it's distance and spin quality?