HIK are the world's largest manufacturer of cctv systems so have huge resources when it comes to sensors, lenses, electronics, software and all the techy bits typically needed for NV and thermal kit
In the UK, HIK and Pulsar are the two leading brands in the night vision and thermal market
HIK price their products pretty aggressively which is good for buyers but maybe not so good for sellers since their margins will be lower
In the UK, to the best of my knowledge, their back up and warranty has thus far proved very good with very few, if any complaints about poor service
The early HIK thermal units did not compare well against Pulsar both in terms of performance and build quality, but in the current range of models hold their own against equivalent Pulsar models and in some cases are better (and in some cases worse)
HIK have a wider range of products with more entry level products which are good for short range work and also simply for getting people into thermal imaging
The image presentation on HIK thermals is significantly different from all Pulsar models
If you set up a HIK thermal spotter and an equivalent Pulsar thermal spotter looking at the same scene/target /animal, the contrast on the HIK will be higher, but details of the animal you are looking at will be more clearly defined in the Pulsar image.
The Pulsar image will have lower contrast and as is the case with all Pulsars, there is always the sensation of looking at the target through a fine mesh curtain.
That doesn't happen with any of the HIK models
What tends to happen is that people who are new to thermal imaging are attracted by the brighter and higher contrast images produce by the HIKs, whilst existing Pulsar thermal users tend to stick with what they know and buy another Pulsar.
I don't know anything about business conditions in NZ, but I think you'd be missing a trick if you did not stock HIK thermal products
You say that you don't stock night vision - get your hands on a HIK Alpex A50 and take it out at dusk after even the best Swarovski scope and binoculars have given up for lack of light - it may change your mind
Cheers
Bruce