Here is my $0.03. I have three indoor and two outdoor NEST cams. All have two way communication. They are all plug into the wall cameras. They are Wi-Fi cameras and have a pretty good app and website. I initially got them last December because ex-wife. Long story. Likes: Can check any of them at any time. All of them appear on one page but can click on any and get just that camera full screen. Records up to 1080p. All have great night vision. I can create a 'zone' to be notified when there is anything in that zone. I can set to be notified when a sound is detected. It will put an indicator on the timeline colored to the zone or a gray dot if it's outside the specified zone. I pay something like $50/year for each camera to have 10 day recording storage. You can get I think 24 hours free. Also can have 30 day storage for a bit more. I'll have to check out the software posted earlier. I can also have the camera turn off if I'm home which can be detected by location of the phone or simply the phone being connected to the Wi-Fi. Dislikes: Drops offline. Used to be a lot! Like 2-3 times a day! They must have done a firmware upgrade last month because now it's more like 2-3 times a week! That's about it really. Otherwise I'm very happy with these. I guess they reboot after 12 minutes because that's about how long they are off and I get emails and notices pushed to my phone when they've reached 10 minutes. They will suck bandwidth but not so bad everything else in the house suffers. I bought the Netgear Orbi setup to extend my Wi-Fi since I thought it was weak in the house but that wasn't it. Just a firmware issue with the cameras. I have Xfinity (6 Mbs up, 120 Mbs down). I also have the NEST Thermostat. Not that they all talk but that's how I knew it wasn't the internet because in the 10+ months I've had the thermostat, it's dropped like once. It was pretty much the 1080p recording that got me. Plus them needing only a plug. The outdoor ones I drilled holes through the house wall to plug inside. The wide angle lens allows me to see the entire front of the house with just two cameras. I think that about does it.
If you know what I mean...and I think you do...