CPAStorm is very good, and so is Lead Expose and Express Revenue. They have gotten good reviews from me as well as payment proofs. Let me know if you have any questions about them, I will gladly help!
I agree about CPAStorm that they are good. I've never tried Lead Expose yet, but it seems they may have some potential so am currently looking at their site right now to see what it offers and how legit it looks. So far so good.