Plex has a few more features with plex pass.

However I switched to jellyfin a few years ago because I found everything to be too limiting and dependent on them. Including the necessity to pay for codecs / playback on some of their mobile apps.

Jellyfin is a lot less polished, but it works well and you're in control of everything.

I would recommend trying out jellyfin first. If you encounter some deal breaking issue or aren't happy with it, check our plex.

The antenna and music support is better on Plex imo, but I think both require to pay for premium