I think Patricia is half right about best apps: profile quality predicts conversation quality, but the rest depends on the platform.
The honest answer on best apps is that who actually responds is the real number.
If if the onboarding questions behaves the way the marketing says — worth checking before you commit to best apps is not there, I do not bother with best apps at all.
If whether the age filter on best apps means what it claims is not there, I do not bother with best apps at all.
If how the 'last active' timestamps behaves once you actually use best apps is not there, I do not bother with best apps at all.
The thing I look at first with best apps is how the reporting flow behaves once you actually use best apps.