It is a pity that Stonyridge, Waiheke, was not too exciting. They produce one of the most impressive Bordeaux style reds (and impressively expensive too) in the whole of New Zealand. I have three bottles here in London and keep them for ultra special occasions. I guess they put out something more ordinaire for rushed group visits.
If you ever get back to Auckland there is some fabulous eating and tasting to be had on Waiheke.