What kind of equipment do you intend to run on your track? Scale? Traditional? Tinplate?
The way I see it, you want your track and your rolling stock to be in the same 'neighborhood' as far as realism goes. I wouldn't want to run scale-detailed trains on tubular track with extra ties added. The track would be very unrealistic, and would detract from the look of the trains. On the other hand, I don't much like the look of tinplate on a highly-realistic system like Atlas. The too-realistic track messes with the "suspension of disbelief" that your imagination does when you look at that beautiful, shiny, enameled toy, and tell yourself it's a train. At least it does for me.
I run traditional (Postwar and derivatives) on Gargraves/Ross. I intend to weather and detail the track eventually, hoping to find that sweet spot where the realism of the track improves the appearance of the train--but where the track is still 'unrealistic' enough that the train does not look out of place sitting on it. If I wanted to really own the "toy-ness" of traditional equipment, I might stick with tubular, maybe with some extra ties. But I prefer to emphasize what is realistic in the equipment.
Anyway, that might give you some ideas. You might also look thru some back issues of OGR or CTT, and see what kind of track people have used, and what kind of trains they run on it, and whether it looks "right" to you.
For what it's worth!