Let me see if I can recall all the sites I've been on...
Adult Friend Finder: Lots of really sexy ladies on here, curvy and DTF, as they say. Some of them are swingers, some single, some in a situationship, but it's one of the few real sites that actually will get you laid. Ngl, there are some bots and some scammer profiles, but that's every site. There are real women on here and you just have to be a little patient and very talkative to find them.
Pricing: AdultFriendFinder goes by monthly fee, and the default price is 27.95 a month, though you can get it down to 20.95 a month if you sign for 3 months or 14.95 a month if you prepay for a year. Also, the company has bargain plans like Voyeur for 14.99, which gives you more interaction but not unlimited use.
Ashley Madison: I personally can vouch for AM's one night stand capabilities.


Very anonymous and discreet environment, which makes it ideal for finding actual ladies who wanna bump but might never want to see you again. (Like that matters, lol) Again, you have to be patient. Ladies join for free here so they take their time sifting through profiles. But it's easy picking because it's full of horny housewives looking for side action. Better for guys who need a little help finding a connection, and getting a dialog started too. The site just makes hookups much easier.
Pricing: Ashley Madison doesn't have a membership fee, but operates on credits. They're about 20-50 cents per credit but will go down when you buy in bulk. Thing is, you can only buy in bulk, so 69$ for 100 credits, 34 cents each, or $299 for 1000 credits at 15 cents each. Better for guys who need a little help, but already got good game.
Flure: New site that promotes fantasy scenarios and personal ads that are anonymous. Even the photos are self destructing so it's very discreet.
Bumble: Men can only speak to a woman after she likes his profile in return. Silences a lot of guys we would not be into. Also has business and platonic mode which is nice.
Fetlife: Really simple site, and yet really complex organization of like 100s of forums and niches. But yeah personal ads all over the place for sex.
Feeld: Great for meeting all sorts of people, LGBTQ, swingers, poly, etc.
Plenty of Fish: Mutual matches, live streaming shows, games, it's a nice little site.
Happn: Fun, because sometimes you match with somebody you met IRL and it feels like serendipity.
Hinge: Usually a brainy woman's goto site for meeting someone who FEELS like a long-term relationship but probably isn't.