@killyourfm If you're using Plex for your audio, Jellyfin probably isn't full featured enough yet. Jellyfin in particular doesn't have offline play of your audio library. For me that's a dealbreaker as I can't go into airplane mode. (insert iPod snark here)
There is a third party Jellyfin audio player called Finamp which is better, but offline play is buggy and album based only. Plex likely outperforms just because it's a more mature ecosystem.
No videos yet on it but I'm considering it!