Hi the best I use so far is
ClickThruCash They pay $0.05 per click and are part of Mayors Money which is very well known in the adult biz
The others I use are these
LOADED CASH Dating and Webcam pay per click
These two I have only just started using so dont know how good they are yet
ICOOCASH Movie pay per click with some very good promo tools
HCLICKS Hentai pay per click they allow blind clicks, 404 exits, popunders, redirects
Regards