I use PIA because it’s cheap as dirt. I don’t use their client and I have it setup so exclusively my torrent client uses it. It works for my use case because I’m pretty much just trying to avoid nasty letters from my ISP. I wouldn’t trust them with any of my regular traffic because they’re sketchy and there’s got to be a reason they’re so cheap.
Although I would consider what your usecase for a VPN is - ie what attack vectors are you trying to protect against when using it for regular traffic? There’s arguably very little a VPN does to protect you on public WiFi and also opens you up to new risks
Don’t forget learning about systemd and then immediately deciding you actually don’t like it and would prefer something else