If you like Kingsford in your other smokers, nothing wrong with K in the backwoods. K definately lasts longer and burns more consistantly than lump, but that has to do with being able to pack more in due to the odd shape and sizes of lump. A ton of ash with K though, watch the buildup on long cooks. I use lump most of the time these days but have no problem using K if its on hand.