A couple of nice looking cookers.
Your offset smoker style cookers are new to us here in downunder. While we have a long proud history of BBQ style cooking, it usually is direct grilling, with either hot plate or grill bars, Weber style bbq's were popular here for a while.
We like to use charcoal, but in many areas we have to use gas (propane) in the summer because of bushfire risk. It's actually illegal to have an open fire at these times. even an offset is classed as an open fire.
the offset style are rapidly becoming popular, and I recently bought a cheap chinese one (I call it the junk). Now that I have found I like it I have started to make one. Suitable gas tanks are very hard to come by here as we can't own the large ones only rent from the gas co. The largest ones we can own are 9kg (20lb) that we call bbq gas bottles. and they are too small, although ok for the offset fire box on a small cooker.
However there is a small black market in used tanks from cars, and I have managed to obtain one that is about 14"dia x 90" long, about 60 gall, a little small, but I think usable.
i guess i should take some pics and post them.