Just played a round with a Red No. 1 Test Ball today. No perceived long club distance improvement against other balls that I use, Pro V1, Z star, TP5, but I felt the ball flew straighter with the longer clubs which gave me confidence on the tee. A pure strike with shorter irons and the ball seemed to fizz off the club face, giving 5 - 10 yards extra carry. This gave me some worry early in the round as I thought it may be a little firm for good short game play, but was nicely pleased that it gave a soft feel on chip shots and checked up nicely.