My experience is similar to
@TonyR.
I had NVRs for many years. It was a frustrating experience.
There is a big debate here on which is better. Personally I found the NVRs to be too clunky and not very user friendly or intuitive and got to the point that I was reactive instead of proactive. I literally tested BI and knew within a few minutes it was better than any NVR I ever had. Personally I didn't feel like there was a huge learning curve.
Personally I can set up BI faster than I can an NVR. Lot's of us are tweakers, but it is very possible to set it and forget it as well. I run two instances of BI - the one I consider my main driver hasn't been touched in years. It just chugs along and sends me alerts based on how I set them up. I run another instance that is the latest that I play with and tweak. If I ever come across a feature that is worth updating my daily driver, then I will do so.
Like literally I would go months on end not even looking at the NVR videos because the interface was too clunky and would take forever to pull up any motion from the night before. And ended up turning off the alerts because there were so many false triggers. I would only look at it if I could tell someone messed with something on my property or a neighbor asked me if my cameras caught anything.
Now granted my experience was before AI, but my neighbor recently bought an NVR and a boatload of cameras and at least once a week he is asking me something because he forgets how to do something easy because it isn't very intuitive.
With BI, in addition to being able to configure it such that I get notifications whenever someone gets too close to my house, I can literally in less than 30 seconds every morning do a quick review to see if there was any suspicious activity or people walking down the sidewalk at 2am. I could never do it that fast with an NVR. Even those here that are long-time NVR lovers gave BI a try and now they run BI (some in conjunction with their NVR) just because of how much faster the scrub function is.
Here is the search tool of all the NVR versus BI comparisons:
blue iris vs nvr ip cam site:ipcamtalk.com - Google Search
I have had whatever the NVR operating system is running on go out. TWICE. Got to buy a whole new NVR - TWICE
I have had the ethernet port go out on an NVR. Got to buy a whole new NVR.
i had the HDMI port go out on an NVR. Got to buy a whole new NVR.
Most I ever got was 2.5 years. The only working part was the HDD that I simply moved from the old NVR to the new one. I got to the point of realizing that an NVR is simply a stripped down computer, so I went to BI and never looked back. I got tired of buying a whole new unit.
So in my BI Computer, at least if the SSD goes out, I can just replace it. If the ethernet card goes out, I can just replace it. If the HDMI port goes out, I can just replace it. etc.
Personally I gave up on NVRs because I have found them to be clunky and a struggle to review clips and if a component goes out like the internet port, then you are stuck buying a new NVR whereas a computer part goes out and you replace just that component. I went to BI on a dedicated machine and haven't looked back.
Keep in mind an NVR is simply a watered down computer....