I tried Jellyfin so that I could move away from Emby, but the deal breakers for me were:

• No way to view my music library in folders (I organize all my music by genres)
• Terrible performance on Samsung Tizen (my primary tv)
• Can’t stream custom music radio stations by their m3u files

Other things that I didn’t like:

• Doesn’t save the filters I selected when viewing the library previously
• Doesn’t have as much working plugins on home assistant (this may have changed by now?)

I truly do want to go to Jellyfin, but the biggest deal breaker of them all is the lack of support getting it to work on the Samsung TVs efficiently. Perhaps someday it’ll change, but at the moment, I’ll probably stick to Emby but keep an eye out on updates :)