Good as gold

Slang originated from Australia/New Zealand meaning simply that something is great.
Also popularised by Vanderpump Rules star Scheana as the phrase was the title for her first single released in 2013, and the phrase is a running joke on the show. Good as Gold rose to prominence for a second time in 2023 after it was rewritten and used for an UberOne commercial, performed by Scheana, Ariana Madix and Lala Kent.

Person One: How are you?
Person Two: Good as gold!