I had RealityKings at $9.99 a month, but when I called them to change credit cards I went for the year at $90, which equals around $7.50 a month. I think RealityKings is the better deal because they have Wicked, Brazzers, and a bunch of other sites as partners and if you want to expand your membership it costs as cheap as $50 to add a site for the life of your RK membership. I added Brazzers like that, but you have to wait for a sale, partner add ons are usually $70, but they go on sale every few weeks.
One thing you could do is try this site: discounts.freeones.com. They offer a lot of sales for $9.99 for a month and RK and BangBros are avaliable. If it's more than $9.99 a month, wait a few days, the sales come back. Get the site for a month and see which ones you like better then, cancel. When you cancel, they might ask you to stay for the discounted monthly rate. That's how I got it.
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