I was so excited for my first run with the drum yesterday I spent over $20 for a 16 lb bag of Kingsford (blue) and an 8 lb bag of (gasp!) Cowboy. I've read nothing but bad reviews on Cowboy but I was too anxious to not get a bag of something that was lump.
My opinion on the Cowboy - it wasn't bad, at all. I had seen a pic on another forum or thread with what appeared to be a piece of plywood as part of the lump. When I dumped into the basket on Thanksgiving morning, I was very observant about what came out of the bag, and it all looked fine, so I'll have to give it another shot since it's the only thing I've found here in south Seattle.