I have an Old Country Brazos. Its 1/4" steel. Has a 19 X 40 cook chamber with a 22" firebox. I enjoy the barbecue it makes more than any other. I just don't get to cook on it often enough, weather is the main reason I don't. I also enjoy the whole process of sourcing the wood, splitting it to workable size, and then feeding splits to it during the cook. But its not for everyone. Ya kind a gotta be a bit of a fire bug, if you enjoy pokin and stoking the fire in a fire place, this might be your thing.
I might be upgrading my Brazos and I'm looking closely at Workhorse pits, at the Franklin pit, and I would also put Lone Star Grillz on my list.
The first decision to make, is do you want reverse flow vrs direct flow. Shirley Fabricators in Alabama make a very popular reverse flow. They have a patio model priced in the 1,500 to 2,000 range. Their wait list is up to 3 years, except I think maybe its shorter for the patio model. If I was going reverse flow, I would probably go Shirley.
The Yoder design is a bit out dated. As is Horizon, which is basically the same smoker. And both are rooted in the original Oklahoma Joe's. When Joe Davidson sold out to CharBroil in 1998 and they immediately cheapened the product, Joe's brother Roger started Horizon , building the same Oklahoma Joe smoker. Then his plant manager left to go up the road to Wichita and work for Yoder, and built basically the same product. They're " bottom up " smokers. They exhaust at the top of the cook chamber. The better newer designs exhaust at grate level.
Lang is reverse flow and honestly, I don't know much about Lang. They are popular , though.
Lone Star has two versions, they've got the 20" wide that are " top down " cookers. They deflect air from the firebox up and say it circulates. Their firebox has some unique grilling and griddle capability. Their firebox is square with a flat bottom and there's a problem with a flat bottom in keeping a good coal bed together, but they're recently built a firebasket to solve that problem
Lone Star also has 24" pipe smokers that I really like, except they use tuning plates. IMO, if they would update the exhaust on the cooker, they would not need the tuning plates. That's what Franklin and Workhorse have done. But that's just my opinion.
I love these smokers, love to talk about them, if ya got any questions I'm glad to try to answer.