I bought a 2020 version but it had problems with derailing on Atlas O-54 turnouts until I re-gauged the wheels. I run it conventionally but still don't think it runs well, especially at slow speeds. Watching it run provides a good example of "dynamic augment," the vertical pounding effect due to dynamic imbalance (and mechanical sloppiness) of the rotating/reciprocating machinery. As a New Haven fan I considered buying the latest version but decided against it due to my experience and also due to price.
MELGAR