For me, I'll be sticking with the KBB for a few reasons.
I've been successful with it, and it's easy and cheap enough (for me) to get when it's on sale - especially when you can get a $6.88/40# price match
I tried the Cowboy lump when it was recently on sale for a couple bucks a bag. I really like how it handled, but, my wife is sensitive to the smoke and picked up on the change in fuel when I did a whole chicken.
Although, the guys at work liked it when I grilled some chicken breasts and hamburgers, so I'll still be able to use it
But I also have a couple bags of K-Comp that came w/ a red kettle that I still need to play with.
(I was going to say that I have a couple bags of K-Comp that came w/ a redhead that I still need to play with. But I knew that would be taken the wrong way with this crowd.)