I recently dined at BoN for the first time and felt the charm. The pizza was pretty good, consistently crunchy-bottomed, cornmeal heavy. Didn't try the sausage, it was my wife's turn (she's pepperoni, I'm sausage). It probably doesn't break into my top tier tavern-style though– its distinctive quality for me was more about the looks of the crimp rather than a stand-out flavor profile.
That said, I respect the deep sentiment around here and I know a bunch of Northbrook natives who love this place like it was a member of their own family. And on that one outing, over the holidays, the place was aglow with cheer and family togetherness. What's not to love?
On a similar note– while I've never been to Rip's, I think it should also be filed in the landmark department, like Barnaby's, a frozen-in-amber tavern that I'll bet still does things the same way they have for decades. Its actually not much more of a drive from where I live than BoN, so while its a destination for many of us, it seems to have deep reverence within its own neck-of-the-woods.
Frequency of board discussion seems like one qualifier for the GNRs, but I personally value spots that serve their communities the old-fashioned way.