I have only used Plex very briefly before I moved to try Emby then Jellyfin. Granted I am not a heavy user of a media server - basically no one else in my household uses it, and I don’t have a lot of content, but I do use sonarr / radarr with it.
The moment Plex put me off was when I realized a Plex Pass was needed to add transcoding capability. What are some of the reasons people like Plex better than Jellyfin, other than those who have been using Plex forever and are just too lazy to explore other options?
Downloading subtitles on the fly is way more comfortable with Plex since there’s AFAIK no limited number of downloads as with Jellyfin’s opensubtitles.com plugin. Also “secure” remote access is vastly easier. I personally enjoy the tinkering aspect and was thus happy to have the challenge of setting up a reverse proxy and scripting an automatically rotating set of opensubtitles.com API keys, but I think most people kinda just want to watch stuff.