Hikvision vs Dahua DVR

I planned to buy a 4 CH DVR .. it’s between the top 2 brands .. hikvision vs Dahua.

Which one has better firmware/security updates record?

I currently have dahua cameras and planned in buying hikvision cameras (prices got better lately)… can I mix dahua and hikvision cameras on dahua or hikvision DVR ?

submitted by /u/yeahman2017
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