I lived and worked in the South Island of New Zealand for four months (their winter) way back in 1970. It's a beautiful country, but after the four months I was glad to leave. If you're an outdoors person, who loves hiking, camping, fishing, mountaineering, etc., then NZ is probably one of the best countries in the world for it's clean air, water, and scenic beauty. If you're not an outdoors person, like myself, then you could possibly find yourself bored to death there.
I left in September for Sydney, Australia, and as soon as I arrived at the airport, it was the first time I felt warm in all those months. I didn't dislike New Zealanders, but I found the Aussies a lot more extroverted with a rougher exterior. Believe it or not, the Aussies seemed to suit my own personality better (introvert) because they drew me out of my shell. I was only in Australia for a few days, but would have liked to have stayed longer. It was time to head back home.
It won't hurt for you to try New Zealand. For better or worse, it will be an experience you won't forget.