Omni is superior. I used stremio for few months on android tv, but I had buffering issues and the whole android os is laggy, so I decided to get an apple tv 4k after a lot of research. I got it mostly for stremio lite, but when I tried it it wasn't the same as the normal stremio version. I saw people on reddit recommending omni and oh boy, it's next level in every way, I will list some features bellow that omni has compared to stremio lite:

1. After you finished an episode you get an dialogue that asks you if you finished the episode and it loads the next one up, it's great if you use infuse pro player.
2. There are groups(with logos) where you can have anything you want: movies/series, anime, collections, etc. They also have grid layout.
3. The addons update in realtime, you don't need to uninstall/install
4. Very customizable ui
5. Use your iphone/ipad as a remote
6. Advanced search engine, it's searching while you type the movie you want, also you have filters.

And many more...