I've stopped treating any prized or hard to find cigars differently than my everyday smokes because I have been disappointed by the two I saved for special occasions. I received my first (and only at the time) cc which was a PSD4 and saved it for 4 years. I lit it up the morning after my son was born last year and it was so plugged I couldn't smoke it. The second was an Opus X A that I saved for a couple of years and smoked when I got promoted a couple of months ago. Wasn't too impressed with it, maybe my expectations were too high, but I prefer the smaller rg Opus stuff.
So, now I may get a "unicorn" here and there, but it could go up in smoke on a random Tuesday if it looks good that day.
My most prized right now is a Opus 6 box from 2013 that I just picked up, so I don't know what any of those taste like. I've also been eyeing a 2015 Opus 22 box, but haven't decided if I want to spend $1000 to try them.