I don't doubt that the Dadant is a good buy and possibly the best smoker - even though I don't own one. But I don't understand how some users claim that it stays lit longer. I think most smokers available have basically the same design.
Today, I discovered how my smoker can stay lit all day. Sometimes I do a 7 hour shift so this will help. I was given a pointer to using
wood pellets as smoker fuel, the stuff used for pizza ovens etc. They are 100% wood - so I guess they must commandeer a natural ingredient (like water?) to hold the pellets in shape. They need help to light initially, so I'll hang on to my wood shavings (pet bedding) for that.
But when properly lit, the smoker just kept going. I didn't do 7 hours today, but I think the smoker was up to it.