We have only been out in it once, but I guess it depends on what you like to do, Devil's Den has great trails and caves, I like Roaring River near Cassville, MO for the trout fishing (I have a fly fishing problem).
Down along the Buffalo river there are some great places to hike and float.
We are trying to plan a few "short" trips and see whats out there.
Oh, we were alos looking at Murfreesburough (? spelling) the diamond state park where you can pay a fee and go in and hunt for diamonds. (and keep anything you find)