I agree that 2CA is different to WS/Smooth in a good way, in that it plays more from the 60s & 70s. 6iX in Perth is similar to 2CA, which is not surprising, considering they’re sister stations.
2GN from Goulburn & XLFM (formerly 2XL) from Cooma are also worth a listen, but you can’t really get them in Canberra, especially when the former eventually converts to FM. They’re also owned by the same company that owns 2CA & 6iX, but are musically quite different to those two, in that it focuses more on the 70s to the 90s.
As it just so happens, Lava now has the playlists for 2CA & 6iX.