I can only think of 3 right now.
ClickCa$H - Best converting free cam site left (IMHO). Payments arrive on time and bonuses each month are a plus. I also convert their PPS as well for a fresh $105+/sale.
PimpRoll - Great sites. Low payout threshold. Payments always on time.
FNCash - Nothing like making some sites that sell tangible, adult products. Their products sell. On-Time payouts. Nice % of sale.