I bought both Plex and Emby. I started with Plex but had some technical issues related to my machine having multiple IP addresses so I switched to Emby. I tried Jellyfin before switching to Emby but it wasn’t as capable as Plex or Emby (at least at the time) and I wanted something with some commercial support behind it. I have been pretty satisfied with Emby, but do wish it would get requested features added in a much more timely manner.
After looking at other’s lists I think I am missing a good document server. Emby isn’t the best music and photo server so I could look at improving that, but it has been good enough for those purposes that I haven’t felt like going to the trouble of installing anything else.
Crazy idea, but if you can’t get the bandwidth to support a media server like Jellyfin or Emby where you live, what about placing a server at a trusted relatives or friends house that does have access to high bandwidth? You might need/want to help offset a better internet plan for them though. You could then setup a VPN connection to be able to manage the server remotely and sync files and media to it. You could even use it for off site backup.