If someone were to try and download a song from (say) Youtube, Spotify or Soundcloud which site would provide the best audio version?

Sometimes the songs I seek aren't available via the usual places (like soulseek, electronic fresh or dj soundstop ) and I have to opt for a less desirable choice.

I'm currently using Media Human's incredibly versatile Youtube to MP3 ripper (it also rips songs off Soundcloud, Spotify, Vimeo, Bandcamp, Mixcloud etc) and is highly recommended.

https://www.mediahuman.com/youtube-to-mp3/31/

The sound quality of its rips are great (I usually only play these rips in the car or on my mac so I'm not sure I'd notice any degradation in sound quality).

This Afrobeat rip, for example, sounds fantastic when turned up and becomes a full on electronic song.

https://www.youtube.com/watch?v=WEJ_m2HPXv8

Nonetheless, I still have a nagging feeling I might not always be taking from the best possible source.

So anyone know which service has the best audio encode in the first place?

thanks