I am debating whether to save up and get a Lang 60 which is a reverse flow. I hear you need to add a split every hour or temps will drop. loading up the lang can cause it too get too hot as well. On the other hand i see 250 gallon smokers on trailers for sale. One guy told me that was selling his that he could get a good coal bed going. throw some flavoring wood on and itll hold for 4 hours or so. I guess i am asking two questions. Which one will in the long run use less wood or would they both be using the same amount as one of you load up and the other you slowly load up. Also is it true that you can load up the 250 gallon smoker and it should hold its temp for more than a couple hours? I am asking this question for future all night cooks. Any experience from you guys out there?