Three Adams, one All Nation. My opinion only - The B&O FT has the best. Second is the GN. Worst is the SP, followed closely by the AN UP F-3. I carved the two on the left, and may yet carve a bit more on the GN. Brass/bronze is fixable with solder - I think the AN would work with inserts surrounded by those silver strips.
Later plastic models have gotten much better - for instance, the Lionel PA is about as good as they get, and that includes Key, at least in the windshield and nose contours. The MTH was quite good, but not as good as Lionel. It compared well with the earlier Key.
