The first is the arrival of Vincent Aviation's latest British Aerospace Jetstream J32, VH-OTP. I assume this will be going on to the NZ register shortly along with a repaint?
The second was a Piper PA42-1000 Cheyenne, VH-BUR. This aircraft is registered to Burley Aircraft of a NSW, Australia address. It is over here performing navaid checks for the Airways Corp of New Zealand.