Out of the three Australis polishes I have tried, not one has disappointed me. The formulas have always been spot on and incredibly pigmented.
I think Citrus is new to New Zealand. I checked Australis and they have Citrus described as an orange with gold shimmer... I haven't seen any other orange Australis polishes with shimmer, maybe it just isn't in NZ? Who knows.
These polishes are really cheap too! The first time I bought them they were around $8 but Citrus was $12 or $13.
I highly recommend you try Australis out if it is available in your country!