Which country is more suitable for immigration, Australia or New Zealand?

Australia has a vast territory and its population is mainly concentrated in several major port cities. Sydney, Melbourne and Brisbane are all very lively. New Zealand is relatively comfortable, with low prices and better environment. Both countries have similar immigration policies and benefits. If you have PR status, you can live freely between the two countries, or you can live quietly and pay attention to the environment. You can choose New Zealand, Auckland, Wellington, Christchurch, Hamilton and Dunedin.