Currently managing several units for customers: DS-7604NI-E1/4P, DS-7608NI-E2/8P, DS-7616NI-E2/16P, DS-7716NI-SP and DS-7732NI-I4/16P. I’m always willing to try 3rd party cameras with the Hik NVRs, but thus far haven’t found a 3rd party camera I would feel comfortable passing on to a client.