In all honesty, I'd be picking up replacement boats in NZ, the freight charges including the customs clearence etc, make bring out boats financially uneconomical unless there is high sentimental value. Quality second hand and new lasers are readily available and if you're bringing something else out, you're better off sailing something the locals sail.
Thats what I thought, but when I looked into it, the replacement cost for a good Laser and Topper in New Zealand is far higher than what I would get for the two boats if sold here. The Topper especially does hold sentimental value - Aside from essentials and laptops, we're not taking anything else!
We've now had some good quotes, so I guess the boats are coming too!