Good to see you back again Griff.
And when you've determined what that is can you let the rest of us know!
Is a garden railway ever finished? I know mine's never reached that point and it's difficult for me to see when it might be. I do little bits here and there and then I'm away doing something else for a while.
Yes, a low level garden layout running through the borders takes some beating and allows you to take advantage of the natural elements with very little need for you to add anything else yourself. It might involve a bit more in the way of maintenance and cleaning but it's a small price to pay in my opinion.
You can say that again!
Let us know how you get on.