DTI cash works very good for me. Above is a screenshot of just one of the users and how he likes to come back, again and again.
Quick and prompt payments and you even receive a $75 bonus when you signup.
Their affiliate LeRoy is online most of the weeka and very helpful and friendly. Backdraw might be their own affiliate system which takes a bit to get used to, but once you do, it's not a problem at all plus it's nice to get a chance to break down stats down to each user, like above.
All in all, highly recommended!