I recently bought 2 of the cyberpower 1500va units. Plan to use those with the nvr, Poe switches, etc for the ip cameras I plan to install. I've had several of the APC 1500va units for years, and have never had issues with them. Used to have frequent brownouts and power issues, and the larger ups units all have voltage regulation, so they have been a critical piece of gear for my computers and electronics. Last year, I was on generator power for 6 days after hurricane Matthew. Since the phone line was still operating, I was able to use the internet/ watch tv, etc. The APC units kept a clean, regulated power source for my computer, modem/router, and tv.