It will definitely depend on what you're needing it for and what specific requirements you need...
The 51mm max lens length on the Huisun won't be your best friend when viewing people at 200m. Longer would be better. Also, speed domes are called that for a reason. Particularly for a corner mount, the Huisun's slow pan speed is an Achilles heel. If the budget is there I'd spend a few more bucks and be happier.
where did u order your dahua?Oh.....I also Had a Sunba 501 and 601 model. There is no comparison in build quality, zoom capability, firmware, and software to what the Dahua offers for the price.
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where did u order your dahua?