Not to belittle anyone that wants to go all out, but I am finding that the standard Weber 22" kettle grill when used with any of a variety of offset cooking methods, makes for an excellent smoker on its own. All you need is a grill and foil drip pan.Okay a thermometer helps, a LOT... The only reason for me at least to do the stacker jobs is to get more internal chamber space to do bigger cooks... Second grills on the market via Craisgslist are somewhat plentiful, for not a lot of money... Might as well go that way.