I've tested a dozen cameras that have a range of compatibility options with Apple and Siri, seeing which performed the best with the Apple Home app and had reliable connections. Devices with Matter that extended support to HomeKit Security Video typically work best and my favorite was the Aqara Camera Hub G3. Not only did it make connecting to Apple's app easy but it's a versatile indoor camera that can expand to a mini security system if necessary.
Roku's content-agnostic approach, ease of use, large app library and excellent search functionality help give its products the edge over companies' offerings. We've found that the Roku Streaming Stick 4K is the best streaming device due to its enhanced HDR support and user-friendly interface. While I haven't formally reviewed the Roku Streaming Stick Plus yet, the current version is also worth a look. Watch this space. If you want a device which offers enhanced functionality, such as cloud gaming or smart home integration, then the Google TV Streamer or Apple TV 4K have the added features and
If you're part of the Apple ecosystem, then the Apple TV 4K Wi-Fi is a no-brainer. There's a 30-50% premium over the top Roku model, and even more compared to the cheaper models. But, like all things Apple, it makes the streamer easy to integrate and use -- as long as you have other Apple gear. All those benefits go away if you don't have an iOS device. If you're not on iOS or aren't concerned about staying in Apple's ecosystem, the Apple TV 4K is a harder sell. On the hardware side, there isn't much of a difference between it and the Roku Ultra Both are fast and easy to use. But if you don't