I had posted a thread not long ago asking about a couple smokers and thought I was going to go with the Lang smoker, BUT ended up finding a custom smoker that I love so far. Ended up coming across a used one that had been well taken care of on Craigslist and even better it was only a couple miles away from me. It's not a name brand smoker, but was well thought out when making it.
here's a pic.
The inside is set up with a set of tuning plates that extend over to the rib box (can go further, but no need to spread out right now.) it unfortunately only has one rack in the main chamber, but with both stacks I can control the stacks so that the warming box is either within 5 degrees of the main chamber or will sit at around 200 while the main chamber is around 250. It's mainly 3/8" steel, except for the firebox where it is 1/2". It is plumbed and set up for a propane assist start up too. Overall it's easy to maintain temps and gets back up to temp if I open it very quickly. Very happy with my purchase!!