Gene,
I'm one post too late in seconding your remark. I couldn't agree more. #5 is also very tough to read. But I think my favorite green at Sand Hills is #18.
If in fact the quote is made by Jack Nickalus, my guess is he's referring to Sebonack. Generally comments like this are reserved for wild or severe greens, like #15. If I had to pick one "best" green at Sebonack, I'd go with #11, partly for sentimental reasons. I punched a running 5-iron in there, in a really stiff breeze, and made a tap-in par.