I have tried Roku, Fire TV, Chromecast (not the new models with an interface), and AppleTV. So far Apple TV is the cleanest without ads or sponsored content on the home screen.

If you find something better please let me know.

That makes sense. I have a very simplified setup currently, the next addon was going to be jellyseer but now I have another option.

Can you explain why you use jellyseer and reiverr?

I have considered having a mobile lab like this but have never came up with a good use case. What do you run on there that needs to come with you instead of just VPNing back to it?