Your domain name is crucial as it is your unique online identity. Select a domain name that is your organisation or product/service name or a closely related name.
Make it easy to remember, as short and as simple as possible.
If your target audience is NZ, then register a .co.nz, .org.nz or simply a .nz name.
Also consider a generic name that is relevant to your business or industry. There are many new domain extensions available now from .plumber to .lawyer and everything in between.