I was given a sleeve of the black prototype test golf balls by our club pro, I normally as a fairly high handicapper (19) play with a srxn soft feel. Wow!! What a surprise I've hit the ball at least 20 yards longer straight and a control and consistency I'd not experienced before in addition a very soft and positive feel chipping around the greens that gave me a huge amount of confidence to play some of my best ever golf. Lastly the putting probably the strongest part of my game, again a great feel off the putter face for strike line and weight to the pin, very positive performance to a new putting level and big improvement to my overall game. My only regret is I've lost all three balls now mainly as a result of the longer distances I was striking the ball in areas I'm was not used to being in and would not normally come into play. Can't wait to find out what they are and when I can get to purchase some more, I am convinced it will bring my handicap down by at least 4 - 5 shots with very little effort. Delighted to have had the opportunity to try these fantastic Titleist balls out.