Hi,

For New Zealand.

PLS8-e would be best for LTE in NZ as the NZ LTE frequency is 1800mhz on all 3 competitors networks.
3G would only work on Vodafone and 2degrees network.

Next best would be PXS8 as this would support 3G on all 3 competitors networks as well.

New Zealand will soon be building a 700mhz LTE network of which there is no support on any of these modems.

Nice and simple is NZ.