Yes replace it, first elements weren't welded, after many leaking like this they started welding the resistance to the nut. Came across several leaking like this. Welding would work as well but I haven't tried it.
I used to have 2 NZ, Royal and Ceado E37S, so speaking from experience, going from NZ to Royal is definitely downgrade. Yet if you don't have space and want to spare 1k euro, Hedone Honne is a good option.