On an impulse, I picked up a bag of Stubbs 100% All-Natural Charcoal Briquettes at my local Lowe's the other day. I've used sauces from Stubb's and found them to be pretty good and I thought the charocal might be like the Kingsford Competition Briquettes that I've read so much about (but never seen in a store).
So when I got home, I fired up the cooker with a small pile of the Stubbs briquettes and had the cooker going pretty quickly for some pineapple shrimp kabobs. My first reaction was that there's no difference in appearance or smell to any other briquette that I've used. And, given that I cook on Kamado style cookers the last thing I wanted was the extra ash that comes from briquettes vs. lump charcoal.
In the end, the fire burned fine but didn't have the nice smell that I've come to expect from burning lump charcoal. It also created the ash that I had hoped to avoid and did not extinguish cleanly with the ability to relight again. In short, this was just charcoal briquettes that I'd expected something more from because Stubb's had put their name on the bag.
I don't know about you, but I'm sticking with all natural lump charcoal.