Apple Maps in New Zealand is really, really good. Travel estimates are nearly perfect.
In smaller countries though, it's total rubbish. Samoa, travel guidance is nearly non-existent. Tahiti, very patchy. In those countries, Google Maps was perfect.
It really is location dependent. I find that Apple Maps has much better driving directions and a better UI that doesn't get in the way. Google Maps on the other hand typically has much more up-to-date information on businesses and restaurants. I am in the habit of using both if I am trying to find an unfamiliar business address.
In smaller countries though, it's total rubbish. Samoa, travel guidance is nearly non-existent. Tahiti, very patchy. In those countries, Google Maps was perfect.