depends really, but if you're looking for highest commission that accept US players, than mainstreetaffiliates are the best - Pay 40%, and they pay the fastest out of the bunch.

otherwise, casino blasters pays 36% flat, not negative carry overs, with 5 (i think) properties, and they cross promote them.. next in line would be grandeprive, then europartners.

This is all my opinion, but they have treated me nicely.