The G&O garden railroad G gauge line uses LGB brass track. We mostly run track powered trains. The power supply is Bridgewerks. We run battery and live steam trains once in a while.
We run LGB because it was an affordable option when we bought it on the used market. The track had been outside for 10 years before we got it and we have been running it for 8 years. This track has held up very well. We do need to clean it before a run. This can easily be done using a track cleaning car or by hand. I prefer a track cleaning car pushed by a track powered engine.
I suggest that you contact your local garden RR club to see what is for sale. Garden RR's are always selling both trains and track.
The G&O runs DCS on its O scale line. We had issues getting it to work but now it runs fine.
Here is a link to the G&O Story on this forum: https://ogrforum.com/.../the-gandamp-o-story
NH Joe