It took me all of 20 minutes to get qBittorrent, Radarr, Sonarr, and Prowlarr working in docker. And then another 10 minutes to add in the VPN container.
The important thing is that I left the GUI default because they work just fine, there is no need for different GUIs for any of it.
Both, docspell has eliminated all of the filing cabinets in my house (the only thing left is the fireproof/resistant safe for things like birth certificates, SSN cards, etc.). Outline is my note taking and documentation tool, Jellyfin is where most of my media lives now, ChannelDVR gives me access to TV via Jellyfin, etc.
But I also really like playing with random open source projects and seeing if they have any use to me.
Telnyx, they're very well known, and they run their own network (so it's extremely stable) and it's pretty cheap. Plus you can use Hosted SMS if you want to add SMS capabilities to existing numbers, even land line numbers.