Android TV and Google TV are quite similar; they're both made by Google. They both have smart functions and have a menu that looks quite similar to make navigating easier and more user-friendly. Google TV is not a completely new and separate operating system: it's a newer and more content-focused experience that runs on Android TV OS. Both operating systems provide access to apps, streaming services, voice search and much more. Google TV, however, is the more 'premium' and more expensive option.
Android TV presents apps clearly on the home screen, making it very simple to select the app or service you want to use. It's the easiest and most familiar choice for a mini beamer.
Google TV is more focused on content discovery. It can bring together films, series and recommendations from different apps and services in one home screen. Simply search for something on the home screen, and you will find it without having to scan each app individually. It feels more modern and personalised. Which is why Google TV beamers are found in a higher price category.
Google TV offers the most complete user experience, but the Google TV name alone does not automatically make one beamer better than another. Android TV beamers also perform exceptionally well and are not 'inferior' or 'bad' choices. It just depends on your preference and budget. You should be more focused on brightness, resolution and internal components before buying a beamer. If you want a more personalised and easy experience, Google TV is ideal for you.
If you have a newer software version, most of the time it means the beamer is more up-to-date and future-proof. If you have a Beamer that's below Android TV 8.0, then it might experience problems in the future.
The best operating system for your beamer is the one that runs smoothly, is combined with other good specifications and makes watching content simple.