Fling.com appeared a few years ago and I have had great success on their affiliate program. They have a few other sites you can promote, so you can decide with sites you want to advertise. They payout on time and have some decent payout options.
Fling.com has only two payout options Percentage Program and Payout Per Order.
For Percentage Program you 60% of the order
For Payout Per Order Program from $35-55 per order depending on the plan the person purchases.