Thanks for a fine review, Gary. I have yet to see the 23 YO in these parts, but will keep a look-out for it. If I come across it I will buy it straightaway. As you can see from my review of the 21 YO, I like it very much and would love to do a side by side to compare the two. Your review has taken me back for a much anticipated sip of the 21.
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