I bought a BC Roaster BC-3MD, double wall drum. It's still out about a month but at least I know it's on its way.
I know these 2 roasters aren't a fair comparison ($2,500.00 vs. $6,500.00). In truth I started out looking at the 1 pound Mill City ($5,000.00) and the 1 pound BC Roaster BC-1(3,500.00). I decided on the BC-1 for my own reasons. Both are excellent machines but I am closer to Buckeye Arizona than Michigan. I moved up 2 sizes because my plan for this roaster might make it so that I would have to upgrade someday soon so I just decided to do it now.
I am excited about the possibilities and opportunities of gas and its effects on roast control and profiles. I have an electric drum now and I am not good enough to stay ahead of the development and having to anticipate how long it takes to heat up or cool off. I am pretty much guaranteed to waste 330 grams to get a profile for the next 330 grams. The problem is I only buy 1 pound of each coffee right now so that means 1 fair roast and 1 a little better. With gas, things should be much more controllable and (eventually) predictable.
In perpetual pursuit of the Celestial Bean.