Travel Vodafone for us
I just spent 2 weeks in mid January and used the Vodafone Travel sim. I got the $49 sim and it worked beautifully in and around Auckland and Coromandel. It was super easy to purchase at Auckland airport and the staff will even get your phone set up for you. I used an ancient, unlocked iphone 4S. What a challenge to revert to such a small phone. All in all, I would use Vodafone again.^