Rochester Old Station.
I'm not sure what the long terms plans are here. When Rochester New Station was being built, I was told that Old Station's platforms were to be retained to be used for stabling, but I don't think they actually are used for that purpose. While demolishing disused platforms is never going to be top of the priority list, if they do stay where they are they're going to become rather unsightly rather quickly.
New Station with its straight platforms and general lack of mould is a much more appealing place to take train, but Old Station with its short and curved platforms had more character and was better for replacement bus services. It was also nearer my house, so I'm a bit biased!