I recommend checking out
Naked Whiz. They test charcoal and give gobs of info on the subject.
I used to use Royal Oak lump exclusively but found the irregular pieces varied so widely that it became a concern so I need to try something else. I've given KBB an honest re-try by using it exclusively for the last few months but the ash build up is just too much for me (again). The briquette consistency and ash volume of lump is the balance I am looking for. I am going to do a price comparison between K Comp and Stubb's (can't find the price of K comp at a local store online) and give whichever is cheaper a new try. So for me the answer of which is best is a balance between cost, performance, and consistency.
Here's what I found
Stubb's 15 lb @ $7.87 = 0.52/lb (edit: found at Walmart today)
KBB (2x20) 40 lb @ $19.99 = 0.50/lb (seasonal sale price is MUCH better)
KBB 16.6 lb @ $11.99 = 0.72/lb
Here's what
Naked Whiz found:
Pricing
This is a bit tricky, obviously, as pricing can vary greatly from store to store and region to region. For what it's worth, we checked a few prices locally. Both the Kingsford Competition and Sure Fire briquette prices came from do-it-yourself stores. The price for Wicked Good Charcoal briquettes came from their website. Since we also saw Stubbs brand all natural briquettes at a DIY store, we also included their price:
Price per Pound
Kingsford Competition $0.75/lb
Kingsford Sure Fire $0.38/lb
Stubbs $0.56/ob
Wicked Good Charcoal $0.53/lb
Wicked Good Charcoal
w/ shipping (See note) $1.16
Note: Wicked Good Charcoal price with shipping assumes purchase of 6 11-pound bags
and includes Fedex Home Delivery shipping to Colorado as an example.