I haven't done it myself but Eufy cameras seem to be among the easier ones to flash. :)
https://github.com/themactep/thingino-firmware/wiki/Camera:-Eufy-E220-%E2%80%90-Ingenic-usb-firmware-installation

https://www.youtube.com/shorts/sRiBUtaGxl4

I flashed 3 Wyze cam 3s in like 15 minutes. I have 2 of them running 24/7 at the moment. They've been running for about a year now I think?

Reliability is generally good, I think I had to restart one of them once. One minor issue I found was it sometimes sucks at detecting low light. Not sure if its just an issue on the wyze cam.

Basically it will be pitch black and randomly decide to switch from night vision to non-night vision making the feed unusable for a bit.

I think coral is not current and hard to get but I don’t watch too closely. Seems to still work! Reolink on camera detection is decent enough for me.

With the app, yes, if you enabled notifications with thumbnails. Using the app and giving cameras internet access is the issue there. Deleted data stayed longer than people expected, too.

The crappy generated URLs for camera access was eufy's fault, but thumbnails in notifications from the app I would consider a user ignorance issue personally.

That said I do not ever recommend using any manufacturer's app, or giving a camera internet access. Isolate it on a vlan, firewall it off, and use a local open source NVR that you'll access directly.

Be aware that you may need to temporarily use reolink's app to set it up first - turn on the ports, for rtsp/onvif/http(s) then you can trash the app.

I think the HA integration will use the proprietary port/api for setup and you can avoid that way too, but don't quote me on that one, you may want to confirm first.

amcrest. i got it working with home assisstant

They gave POE cameras that will just work with an Ethernet cable (although they gave weird POE requirements). Their USB powered ones are wifi connected.

Source: I've had them for years and am happy with the setup.

As a CCTV enthusiast, I do not generally recommend ubiquiti cameras unless the person wants to wholly live in the unifi ecosystem.

They're very pricey for what you get, even though they are pretty good. They're most often not even near the best in class despite their price, though (looking at you, doorbell camera)

They also don't play nice with open/self hosted NVRs. It's getting better due to consistent demand, but the reality is that they're at their best when you use unifi protect, on unifi devices. So IMO it's all or nothing, and since there's a lot better value in other brands, I choose not to use them anymore.

They're pretty user friendly, though

Ah apologies, I wasn't aware of Motion in that context so didn't twig that was the NVR!