Honestly, it doesn't matter for the general "privacy" user I dont think.
I've noticed some apps update faster via Fdroid repos (they maybe 3rd party but show up in Droidify for example), the advantage is you get it from the source, but that could introduce risks if the dev went rogue or their github was compromised.
The most secure way is either Play store or Accrescent, but some people dont want google, and Accrescent is limited in apps (some more have appeared recently however!).
Personally, I want to use Obtanium, but i just prefer Droidify for its UI.