I'm using it now for the first time. I got it at Costco. They did not have the regular Blue bag.
First of all, it's more expensive.
It burns fast on slow cooks. Loaded the WSM full added 3 chunks of Hickory and 3 Apple. Started Minion method w/ 30 lit. 27 degrees outside. Stated it at 11pm. By 7am it was all gone! Found a half bag of blue and refueled for the rest of the cook. I'll save the second bag of K Comp for Grilling. Last time I'll use for long cook.