9 is great for a large group, 10 great for a smaller group (or loner!). I've never heard anyone say anything good about 8
The only other site I've been to is 1. It's on the other side of the river from the normal parking lot, so, it's a nice secluded spot, but 'cause of the river crossing it's a summer spot, for me.
Redwing and others can tell you more more about the southern sites.
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