I get your point. I thought they were genuine Hik, but just local market versions. If they are fakes, I'll probably stay away. Going for full priced Hik's is not an option, so will investigate Dahua (just need to find a reputable dealer).
May go with an NVR temporarily, but the building will only be empty for a month or two whilst it is being renovated. After that, we will need to go Milestone, as the CCTV will be integrated with access control (Paxton) and some other systems. NVR won't be an option then.