One thing that I noted was they all seemed to run like swiss watches, which isn't a factory feature of most brass.
In one of the vids you can see the wall of shelves filled with models.
I have a few NYC brass models.. Key H10A, H10B, Mohawk, and Pecos Niagara. I accept that they won't run great, and they will sit happily in the display case in the layout room.
My 30 year old Con Cor Hudsons will look jit as great as a Key brass one.
~Ian