Boy you opened a can of worms on this one since there are about a thousand different options. It comes down to air from the sides or air from the bottom. There is a mod with a can to prevent chocking with the air from the bottom if you go the silver..you can also mod the silver to perform like a gold by adding side air vents.
I went with the gold but you have to order it online i believe..at least i couldn't find it in the stores.
IMO the gold performs great with a charcoal basket because it gets air all around the charcoal and burns clean.
Mini WSM uds style, Jumbo Mini WSM aka Jimmy, newly renovated Big Poppa Black powder coated UDS, Kettle, Potbelly Stove Smoker Smoke house w/ Smoke Daddy cold smoke generator attached.PitmasterIQ,Guru PartyQ ...Keith