Ask around Memphis long enough and somebody will tell you about #5. It's been made in Horn Lake, Mississippi for decades, and it's the base rub a lot of competition teams and backyard cooks have never found a reason to replace.
It's a foundation, not a finishing rub. Some people put it on straight and call it done. Plenty of others start here and build from it — that flexibility is why it's outlasted a hundred rubs with better labels.
The hard part has always been finding it. Look for it online and you'll mostly turn up people asking each other which grocery store still carries it, or whether anyone will ship them a case. We keep it on the shelf year-round. New bag, new label, same seasoning that's been in it for decades.
If you've been buying one bag at a time and driving across town to do it, this is the easier way.
16 oz. Free shipping on orders over $80