If you are visiting North Island, then check this out...
Whangarei Flying Club Inc. | Incorporating the Northland Districts Aero Club ? Flying since 1928.
I flew with them last year in a Technam for around £60 sterling per hour. Fantastic! Great aircraft, superb instructor, wonderful scenery. Not only was it a great experience, but I learned a lot, too.
We tried to fly at Queenstown but the wind was WAY out of limits. Prices there were comparable with the UK for C172 dual.
TOO