Oregoncowboy. Welcome. To answer your question, to give you a top level starting point in the context of 3RS (which is really not supposed to be about the track, but, well ..... I think it is), you can't go wrong with Ross Switches and Ross or Gargraves track. Or Atlas O track and switches. Also MTH Scaletraxx although harder to work with and limited in options. Then there's the more "toy train" (no disrespect intended) track systems like the new Lionel stuff and the MTH Realtraxx.
As suggested in other posts above -- spend some time searching and reading past forum topics on this subject. It's been thoroughly discussed by the true leaders in this part of the hobby -- and is all there for you to research.
There is no simple answer and this is a topic where it is truly "different stokes for different folks" and you can really get mired down in opinions on this topic.
For what it's worth I think you've got the right idea in doing the research before making a huge investment in track. It never was cheap. But, now it's getting more and more costly. One track brand has just about doubled in price since I bought it 10 or so years ago.