Which NCs age well?

[JJG]

a lot of NCs, specifically the higher quality (expensive) smokes already contain aged tobacco. that doesn't mean they won't continue to improve, its just that they are made to be smoked without additional age.

The only cigars I hear of people aging quite often are Opus. If you were to pick something for long term aging, I would get something complex and bold that's not going to lose to much strength over time. If you start with a mediocre box, you will likely be disappointed.