Get the Classic I, and a charcoal basket. And a bluetooth meat probe if you don’t already have one. Don’t bother with the expensive versions of the Classic. With KJ lump charcoal, you can light and maintain a 250F fire for 14 hours for a Boston Butt, and still have charcoal in the basket. There are tons of videos on YouTube, each one has a new trick to make it easier or more consistent.