Hikvisions best cameras in the market, but pricey, you get what you pay for.
Interesting thing about Hikvision...
Hikvision and Dahua are the two most popular commercial camera brands in the world. But they're also the two brands that are banned from all Australian and US government sites. The controlling share-holder for each company is the Chinese government.
That's not anything to worry about by itself, but a couple of years back they found an exploit in the cameras that allowed the Chinese government to connect to any IP camera. They only found it because hackers started using it to get access to secured networks. Basically anyone who connected their IP cameras to the rest of their network allowed a backdoor so anyone could hack their network.
The exploit has been patched out now, but it was patched out by Hikvision and Dahua.