This may answer your query:
https://ogrforum.com/t...82#41835029372533982
This question gets asked half dozen times a year I bet.
From the 2 photos you posted, neither appear to be correct, at least with the handrail stanchions. From what I've read the handrail stanchions were mounted on top of the walkway, not on the sides or underneath. However, P&D has parts for that.
It might boil down to what command system you desire to use. If it doesn't matter, pick one that comes closest to what you're looking for I think any of the new ones perform nicely. My Railking RS now has ERR Cruise Commander guts inside (came with Locosound).