Yes there is a good selection of de-hums in NZ, but from our experience you get what you pay for.
We researched the market and decided to buy a Mitsubishi. There are several models available with the only real difference being the extraction rate. The higher the extraction rate the more they cost.
We went for a 26 litre extraction rate and find is is great in our 3 bedroom house. Mitsubishi have a readout display which shows the percentage of humidity. We therefore know at a glance what the humidty level is and how much is drops. It also has a mildew guard setting and a laundry setting which is great for airing and drying clothing.
As we said they are not the cheapest de-hums. The model we bought retails at $899, but can be picked up for $799. Well worth every cent.
Pam & Dave