I currently have a Chargriller Duo but i'm not impressed with it at all, so I've decided to build the double barrel smoker. I have been doing research all over this page as well as where ever else I can find on the internet. But, I do have some questions that hopefully someone could help me with. First, what is the difference between the Vogelzang stove kit vs. the US Stove kit? The Vogelzang kit I would have to order online, whereas the US stove kit I can get at Tractor Supply 15 minutes down the road from my house. I'm just curious if there is a difference quality wise. Second, I have seen a big variety of vent pipes on the barrels. Some have one vent coming up out of the bottom drum up into the second drum, and some have two pipes. Same with the exhaust vents on the top drum, some have one vent pipe, some have two. Pros/cons to each way??? Thanks for the help!