Big Bend
If you can afford it or you are camping with several friends and family get the group site. The group site is HUGE open area right next to river and away from the main camping area. Only thing with the group site is that the only thing they have is portapotty. You need to walk or drive to main campsite for running drinking water.
The individual campsites are nice especially the ones next to river but the sites are close together.
Great place if you have canoe or kayak waters are not to choppy. They have several outfitters that will rent canoes and give you ride back to campsite.
If you are a MT. Biker there is a great trail that follow the ridge line with great views of one of the oldest mountains in the United States!!!
And one of my favorite reasons to camp in these area is SENECA Rocks, Just 15 min up the road. Some of the best Trad/sport climbing with easy approach on the East Coast!