Honestly they all suck. The pay ones have way less members, so less chance of meeting someone. The free one (plenty of fish) has more members but to be honest, it is more miss than hit. I used it for about 6 months before threw in the towel. Had a couple okay dates that just didn’t go anywhere, one really bad experience and a ton of chats they never lead anywhere.
To me if we chat a few times and you don’t make the move to meet in person what’s the point? I, personally, am looking to actually date, go out to dinner, drinks, mini golf, bowling, whatever it is that you both like. I can stay home and chat with random strangers on the internet anywhere. I’m on a dating site to date and hopefully find my person.