Both the Pulsar Quantum Lite XQ23 and XQ30 look like a good deal at the NZ retail price as advertised by Yukon Optics.
The XQ30 has a slightly (+100m) better claimed detection range which is probably related to the fact that it has a raw optical magnification of 2.5x as opposed to the 1.8x optical magnification of the XQ23.
Both have a 50 Hz frame / refresh rate so you'll have no problem quickly scanning a paddock.
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