I have/use the Nest Cam. I would not recommend it for any thing more than to have an eye around in an area. Here's why:
1. Cost. $10/month for cloud storage is pretty expensive for what you're getting. If you get more Nest Cam's, I believe there's a discount for each camera you add but still gets expensive.
2. Dependent on the cloud. If you're serious about home surveillance, you can't be dependent on the cloud, period.
3. Alerts. You only get one alert every 30 minutes. If there's motion detected, the app will log every motion but that requires you to be in the app. Say something triggers the motion alert (false alarm) and then 10 min later, someone really breaks in, you won't know.
4. All or nothing functionality. If it's on, it's recording. There's no option that I'm aware of that allows the camera to be on and not recording. There's times where I'm at home but I just want to view an area and don't need it to be recording taking up bandwidth.
5. Very limited customization. I like that you can set zones to focus on but it's almost wasted because you can still trigger the motion alert outside of the zone (why?) and send you an alert pretty much leaving you "blinded" for the next 30 min because "motion detected outside activity zone". There are other small annoyances as well regarding sound.
The one thing going for the Nest Cam is image, it's very clear on 720p and 1080p. Other than giving you a very simple camera to view your environment every so often, I would not recommend the Nest Cam for home surveillance. Even though Piper has it's fair share of issues, it's better suited as a security system than the Nest Cam is.
