Stumbled on this article recently and it got me thinking: With my end-of-the-year bonus coming up, should I crack open one of the special bottles that I've been saving for my unborn son (who will probably sell it as soon as I'm dead)?

Depending on the size of my check, I'm thinking of popping ONE of the following:
Macallan 18 - 1985 (the vintage that won whiskey of the year)
Macallan 25
Lagavulin 21

What's the deflowering threshold for your most valued bottle ... if there is one?