We have found that the 'Good Sam Consultant Teams' definitely do not rate accurately. We have tried to contact Good Sam with obvious errors and we have never received a reply from them and the next directory had the very same ratings - year after year. We gave up.
I sometimes wonder if the 'Consultant's' who might do this year after year might become friends with the some parks and overlook the poor quality of the parks.
RV Park Reviews is much better. If there are mixed reviews you do have to weed out the top reviews and the poor ones and have faith in the middle ones but we found them to be much better overall.