Campground References

We have been away from RVing for a few years and we just got back in with a new Big Horn fifth wheel. Back in the day, the best campground guide was Woodalls. However, I see that they have been taken over by Good Sam/Camping World. For more than one reason, I'm not a big Camping World fan and after going through a few sites on the Good Sam app, it seems that their recommendations are often much different than other apps - they usually rate most sites higher - way higher than others.

Any suggestions on a good source of reliable campground ratings?