Bests & Worsts Reviews from Amazon

I had high hopes for this system. Our old Samsung nvr and cameras served us well, but with only 720p resolution it was time for an upgrade. This Reolink unit arrived well packaged and contained everything I needed for a full install, which took the better part of a day because I had to fish some wires through tight spaces. The installation was pretty routine with one exception- the cameras are a bit of a pain to properly adjust for wall mounting, far more so than the old Samsungs. There's no doubt Reolink could markedly improve the engineering here. (Make sure you test the nvr, and all of the cameras and cables before running your ethernet lines and fastening the cameras in place. It only takes a few minutes and will save you a lot of aggravation if you happen to receive defective gear. Fortunately mine all checked out ok.) The nvr boots up pretty quickly, and the menus are easy to access either via a monitor attached to the nvr with an hdmi cable or, in my case, also via the Windows client app (which is much faster to navigate imo.) When the camera images first appeared I was impressed by their clarity at 1080p output compared to my old 720p video, and couldn't wait to be dazzled after switching to 4k. The nvr reboots when changing output resolution, and I waited with anticipation only to see..... absolutely no difference compared to 1080. I recently invested in a high end 4k monitor (not a tv) that is stunningly clear with other 4k content compared to 1080p, so I knew the monitor was not to blame. OK, I wondered if maybe the 4k monitor is just be incredibly good at upscaling 1080p images. So I decided to compare the 4k image on my 4k monitor to 1080p output on a nice, similarly sized 1080p monitor. No difference. Zero, nada. I had other people take a look and even compared screen shots. Same result. So yes, this system is capable of generating decent 1080p quality images. But in my experience there was no discernible difference at 4k (yes my monitor is properly set), and I regret spending the extra money on this unit. Doing it over I'd buy a lower end system. Will I return it? I doubt it- too much of a pain taking everything down and putting other stuff back up again. But I might return the 2 add on 4k cameras I ordered and replace them with less expensive ones, assuming you can mix camera resolutions on the same nvr. If not then I guess I'm stuck. Bottom line- if you have a well functioning 1080p or better system, don't bother with upgrading to this nvr and cameras. Spend your money on something where you'll get more bang for your buck.