I have just joined SigmaTral. The program looks promising and just launched. It accepts 5 payment processors: LibertyReserve, PerfectMoney, AlertPay, StrictPay and SolidTrustPay (Pending verification). SigmaTral is hosted on a dedicated server and run on licensed GoldCoders script.
The plans can be quite sustainable in the long run. SigmaTral offers two plans:
DAILY: 1%-1.5% for 90 days with the principal returned on expiry
WEEKLY: 10%-12% for 12 weeks with the principal returned on expiry