Got mine yesterday. It seems to be everything it's made out to be, at least for the short hour or so I played last night. It's finer, not as course, a little softer, and seems to adhere to the tip better than Master's. It does seem a little less messy.
Is it worth 15x (Master's $.25 v BD $3.50) the price as Master's? I guess that's up to you to decide, but it is very good chalk. I'm pleased with the purchase. I'd buy it again, I don't buy chalk but maybe once a year anyway, so a few extra buck doesn't hurt.
Jim