I tried RR Track v5. Never did get the hang of it. Couldn't get two pcs. of track together let alone a basement size layout. Went back to pencil and paper and all is right with the world. Layout up and running, with scenery in 3 months. Did I make changes ? yes. Did I make additions ? yes. Am I sill making it different? yes. But only because I want to, Like what as already been suggested its built modular.
Clem