FWIW, I get what David is describing re 2006s. It’s helped me correctly identify the vintage blind on many occasions (ok, not really, maybe 2/10 
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I still have a few Beauxmonts and Suchots from 2006 sleeping. Thanks for this note. BTW, anyone with the Richebourg 2006 would be rewarded. It is delicious but takes a little time to unwind.
No Richebourg, but one lonely bottle of RSV that is waiting for the right moment.
I bought a case (12 at the time) of this wine after tasting it en primeur at Bibendum (this was so cheap as the time…) and I have loved every I have opened… Still many to go… but I would not call it stern… rather delicious…
(and HN is not even one of my favorite producers… although nicely dependable…)