Excellent review, Mike.........as always. No one writes better and more trusted reviews than you. I don't have a clue how old my current bottle of '13 YO' rye actually is, but it is much as you describe it. I would add that my bottle has a sublety that is just exceptional.
Do not go gentle into that good night,
Old age should burn and rage at close of day;
Rage, rage against the dying of the light. - Dylan Thomas