Streamate converts far better for me than Webcam Club.
My ratios for each in December, so far, are:
Money Tree's Streamate -
1:125
Dating Gold's Webcam Club -
1:319
Even though Webcam Club had better ad placement than Streamate and WCC had $150/sale and Streamate only had $40/sale, Streamate generated more sales and more money.
Of course, these sites might perform differently on your sites though.