I know you are looking for people that have used Cam sites and not really so much cam sponsors chiming in, but as they say, "I am not only a rep, but I am a client".
We have
Camspot Cash, and it's doing extremely well with Cam traffic. Now, I know I am a rep for this program, but I also promote it, as does my husband on his sites and it is doing better than we had even expected it to do.
I try and promote what I am a rep for always so I know what is going on and so I can get an idea from an Affiliate standpoint of how they are doing and so on..... so I put up a few links thinking I wouldn't do very well with it since I haven't ever really had a lot of luck with Cam sites.... and amazingly, we both do pretty damn good with this one.
So please forgive my spam in your thread, but I wouldn't tell you it was a tried and true cam site if I wasn't myself promoting it on my own personal sites as well.
We both, my husband and I, have ratios of around 1:48. Of course we don't have a ton of traffic, but what we do have converts very well..... the majority of our traffic is totally SE.