Looks beautiful. I know there is a limit where things get cheaper as they get smaller, and then exponentially more expensive when they are too small like this. At one point I was interested in building NYC Subway lines.. I just thought "they are pretty small, how expensive can they get" oh -- pretty expensive, it can get. 
Can't wait to retire so I can play with scale engines, one line at a time.
MTA Redbirds was my first plan, HO looked reasonable at first and it was probably the most widely available scale at the time to my untrained eyes.
https://www.trainworld.com/manufacturers...d-express/
I don't think they make others anymore.
Sorry we are taking this off-topic.

Can't wait to retire so I can play with scale engines, one line at a time.
MTA Redbirds was my first plan, HO looked reasonable at first and it was probably the most widely available scale at the time to my untrained eyes.
https://www.trainworld.com/manufacturers...d-express/
I don't think they make others anymore.
Sorry we are taking this off-topic.