The options I chose were pretty basic. One probe port in the body, two thermometers in the door, I'm toying with adding on a shelf 5-6" above the fire box just to have an additional place for wrapping ribs and other cuts of meat. I asked about the 3/8" firebox, but it was going to be out of my price range for that add on since I'm already maxing out my budget. I've been saving money for more than 18 months and I've changed my mind on what I want 2 or 3 times. I had been saving for a Humphreys Battle box initially, but after a week long trip to Texas, I got my mind set on an off set. I then switched to looking at Lang. I was a month away from having the money for the Lang and they raised their price another $200. I then started looking at other options and found Shirley. Their quality is head and shoulders above other off sets I've been looking at, so the choice seemed easy to me.