It would be quite difficult for me to choose between detailing and scenery-making as my favorite aspect of the hobby. The James River Branch received the benefit of some of my best scenery work.
While the James River Branch was still under construction, I'd begun another Z Scale layout, the Gorre and Daphetid (up next). Incidentally, the James River appeared posthumously in Jan/Feb 2013 issue of Ztrack Magazine. Also, I produced a short video of the layout in action.