I love Jellyfin and mainly use it and recommend it where possible these days, but man, the download situation sucks. Hate having to download files without compressing them, especially since I keep my media lossless. Its the main reason I’ve still kept Plex running on my server. Also sometimes the clients can be wonky, I’ve found Jellyfin works best for me with Kodi as the player for most things, which is interesting. But overall I do like Jellyfin and support it and its mission, hopefully gets better in these aspects in time.