Depending on how big you want to go.
The scale scene one is a great looking kit.
But if you are modelling a large modern day layout faller have just released this bit of kit
https://www.google.co.uk/search?q=Faller+212130+N+Scale+Model+Kit&source=lmns&client=ms-android-sonymobile&prmd=isnv&biw=360&bih=512&hl=en&ved=2ahUKEwiYza7728neAhUw2-AKHZQpC7oQ_AUoAHoECAAQAw#imgrc=qA9mkRwa4icxoM: