If it wasn't fall, I'd say b&w, but love the touch of fall color and the leading lines seem clearer. Black & white has more texture and detail that draw my eye.
So interesting in that they seem to create two very different images. The color one is all about the changing seasons and the mysterious branch on the tracks. The b&w is all about texture and wonderful leading lines. This is a great illustration of how processing can literally change the meaning of an image.