Hoping someone here has actually tested looking for the absolute best rather than just read about it. Gems hidden is where I would start, since what decides it is the share of verified profiles, not whatever the landing page promises. I judge hidden sites on one thing: the number of live users counts for more than the badge on the download page.
Every time gems sites comes up, nothing improves until you read the newest reviews rather than the top-rated ones. Hidden sites is the clearest case of it — the platform resets your filters after an update, and you only notice once you have spent a few evenings on it.
The gems sites case is instructive — it is worth checking how much sits behind the paywall before you look at the follower count on their socials. My honest read on looking for the absolute best: the deciding factor is the churn on new sign-ups, speaking only for my own city. Would especially like to hear from anyone who changed their mind on gems sites.