Excellent quality product.
I have installed many Hikvision systems and compared to others out there on the market, Hikvision is the best out there. The main issues arise when people buy Hikvision cameras from an unauthorised distributor. Genuine Hikvision products can only be purchased by trade and not the end user. Get your Hikvision cameras installed by a registered certified Hikvision installer and you'll find you will not have any issues. So many on here are complaining about remote viewing issues, that issue is purely down to who your ISP is and your Internet connection speed. I don't have any issues with the UK customer support I get from Hikvision, they are always willing to help if needed.