Nastydollars is my favourite, I'm using them for about 2 years now and never ever had a bigger problem.
Bangbros-programs are also very trustworthy, never had a problem with them.
And of course ARS, also very well organized and payments are always on time.
On the other side there are email-programs that never pay and have TOS which don't allow their affiliates to post anything about them on boards! I guess everybody knows which program I'm talking about, fuckers still own me ~$1600
