Dec, If you keep changing your ball type how on earth do you decide how hard to hit it? I won several sleeves of different type balls last year ( I usually use ProV1) so last winter/spring I thought I would use them up I ended up with the biggest putting crisis I have ever endured, questioning every thing( Yes several new putters!!) In the end I went back to my Prov1 and stuck to it, gradually my putting came back. During the winter I will use balls I have either found or used a lot...But will never alter the ball again.. (Titleist I.m all yours!!)