Existing shower
After 15 years I'd like to update my showerhead so was thinking of just replacing the shower head and hose. This is a Technicon2400 Goya Handshower & Rail Chrome (O400CCR) ordered from Southern Plumbing in Canberra for a Classic Constructions build. (Yes, I still have the original delivery note!) What are my options? Should I just unscrew the hose from the mount and take it into a retailer. I was hoping to research a new model before I did that but assume they are not all interchangeable. Any help would be appreciated. Many thanks.