Relocation from Perth to Auckland advisable?

Hi Fellas, We are a small family of four with two very young kids. Recently, there is a possible promotion opportunity in the same company where I am working in Perth. I have a few questions if someone of you will kindly share your experience about Auckland. - Cost of living (Considering 2 Adults + 2 young kids) - Good, affordable and non-nonsense suburb to live in. Also, If anyone from Perth is there in the forum, Please help sharing pros/cons in comparison to Perth (particularly cost of living wise). Cheers, ZN