So we got Free version of Plexamp :)
Currently using symfonium, does everything I need at least. Can’t speak for plex since it been years but it has most of the things you need, offline playback, playlist downloading and syncing, casting, supports transcoding etc. Plus it works with plex already so you can try it out (it’s free for a week then paid iirc but it’s well worth imho)
I use symfonium too. Great app. I’ve stumbled across some bugs here or there but that might be due to my setup and if I actually bothered to report them, I imagine the developer would be quick to fix them. At least he was fast to reply the last time I opened a ticket.
One great thing I like about Symfonium is the aggregation of multiple libraries. You can add a plex, jellyfin or subsonic API compatible server (like navidrome) simultaneously.
