We started using OKPay as a test for one of our sites some weeks ago and so far everything goes great. Very cheap and very fast, good support and when a clients complains about a transaction, they give you a chance to come with your side of the story. A bit like PayPal dispute system but with more human interaction. We don't use it for recurring payments yet because honestly we couldn't figure out how to set it up and support seemed to be unsure about how to do it, so for now we're using it for 1 month and 3 month accounts with one time billing only. I think and really hope OKPay is going to kill PayPal, they're very liberate towards adult:
https://www.okpay.com/en/support/faq.html
Q: Do you have a restricted business list?
A: We impose no restrictions for particular types of commerce except that we do not tolerate anything related to child pornography. We do allow transactions related to investment programs, gambling and MLM.
So they're ok with watersports, scat, snuff and beastiality content.