Really you will need to buy a fresh tin in ten years, so you can try them side by side...can you imagine holding the memory of a tin smoked a decade ago in order to compare? Also it may be best not to compare at all, imagine the potential psychological damage of realising you prefer the fresh tin over the decade old tin you carefully dragged through three house moves!I have two tins of C&D Bikou that have that suggestion. One is 3 years old, and the other is about a year old, purchased by suggestion from Jeremy Reeves himself on this forum. His thought was “try a fresher tin now so you have a gauge for what kind of difference will happen”. I still haven’t opened it but maybe this summer. I bet i can get the older can to go 10 years.