I go to Vegas with no intention of spending $25.00 on a cube of chalk. I play with a Kamui medium tip on my cue. I see the Kamui setup and they have a 5 person challenge for $5.00 a person and the winner gets a cube of Kamui. I want to try the chalk so I talk 3 of my teamates into risking $5.00 for a cube. I score the highest so lucky me I can win if I put up another $5.00 to insure I get the chalk. The chalk is like paste and goes on smooth. When I shoot it feels like the cue tip stays on the cue ball longer. I am no where close to the league of Efren, but I can impart english like never before. The chalk imparts so much english I quit using it in the tournament because I wasn't use to it and would miss my shape. I am at home now and practicing with the chalk, it is consistant and reliable. I can shoot 20 shots with extreme english before I need to chalk. I never miscue unless I try to shoot 40 shots with extreme english. Before when I would use Masters I would sometimes have the cue ball squirt off the tip of the cue. This doesn't seem to happen with Kamui chalk. You will have to learn to only chalk once a game or it sticks to the cue ball. I do believe that it is rediculous to pay $25.00 for a cube of chalk, but if it lasts for 1 year and you never miscue. Guess you need to decide for yourself.