[And the mutual admiration society posts continue ...]
All of them, unfortunately, lol! I have two main layouts, one N and the other HO, but I will also set up O or G if the mood strikes me.
The technology for detailing even the N gage ones has become incredible, given the advances in the use of lasers for shaping the bodies and adding details or lettering.
My father had an extensive HO layout in his younger days, and I attempted a resurrection of it before he sold the whole lot off. These days I think I'm more likely to settle on N, because you can do almost as much with it as you can with HO and the detail, as you note, is really getting good. And with Digitrax and the like, you pack a tremendous amount of train operations into your layout without having to do complicated wiring.
[So anyone coming into this tangentially and moderately curious, up until the 1980s or so, model railroads were wired with each of the two rails carrying a variable DC voltage and the locomotive moved along that track depending on its orientation and the polarity of that DC current. If it was positive on one side, and negative on the other, the train moved forwards and if the polarity was the opposite, the train moved backwards. That's easy enough when your layout is a simple loop, but as soon as you add switches and cross-overs and
interesting, realistic detail to your layout, you have to cut the rails between different operations sections and wire each section differently. And two trains on the same rails in the same section
always moved in the same direction at the same speed.
Starting in the 1980s, people started computerizing their model railroads, and by the 90s, some interesting standards started emerging where decoders were built into the engines and they were powered by the same voltage and polarity everywhere on the track. But they were controlled by signals fed to the rails that identified the locomotive, direction, and velocity (and lights, whistle, etc.) so that the locomotives could be on the same track section and still act independently. These decoders are now small enough to fit into Z-gauge layouts now, I believe.
Oh, by the way, the word 'hacker' comes from model railroading ... particularly the MIT Model Railroading Club, which, in the 1960s, had a number of rather brilliant electrical engineers creating 'elegant hacks' (often with a
hack saw) to do interesting things with their layouts. These same engineers often made their way over to the computer sciences departments.]
Anyway, every time I start thinking about making my own layout, I start with a simple switch yard and a few hidden loops, and somewhere along the way, I start thinking about implementing my own monorails and maglev trains, too, and the whole plan spins out of control. But I love the hobby.
We now return you to
Star Trek: Model Railroading ... er ...
Discovery.