We've used many KOAs if they're on our route. Not a destination for us either. Sometimes they're the closest to a reunion or visit with family. We've stayed at several on this trip and have another booked near family when we get up their way. Like any other campground, some are better than others but they're generally reliable. As mentioned previously, they often are more expensive than nearby competitors, unless the competitor is a "resort" with lots of amenities. They're usually in pleasant places but sometimes off the beaten track because they are a family destination with playgrounds, pools, sometimes game rooms, and other activities for the kids. I'd certainly stay there if it's convenient. One year we needed to stay at quite a few KOAs and buying the annual membership was worth it because of the discounts.
ArdraF