This I have always found interesting...
I know some folks who just do not care about chalk. To them chalk is chalk is chalk.
Then I know players who are extremely chalk sensitive. They not only carry a specific brand in their pocket, but it has to be worn down to a certain level to be game ready. And they never leave it on the table where another player may pollute the cube with foreign chalk.
I know players who actually humidify their chalk before they play it, and actually feel to be at a disadvantage if they do not have their special blend of chalk and moisture.
There are only two reasons to explain this wide discrepancy among players.
1) People who are chalk sensitive are catering to a psychological condition.
2) People who are chalk sensitive are able to determine a difference in the hit depending
on the brand of chalk.
Anyways you all know who you are.
I will play with any chalk but I prefer the Balabushka brand, followed by Blue Diamond and then Masters.
I can tell the difference too. I have never done this but I would be willing to bet on it.
Masters hits the hardest, Blue Diamond softens the hit and adds some spin, and Balabushka hits the softest and transfers the greatest amount of spin.
I find that Masters and Blue Diamond have about the same adhesion while Balabushka has much more adhesion that either Masters or Blue Diamond.
I cannot comment on Kamui because I have never used it and do not plan to.
So there you have it. Different strokes for different folks, I guess we all have to find our own.
Good luck.