I have several 14 oz tins of Edgworth RR that I've been hoarding since they discontinued it. I also have the remains of an opened tin in mason jars, and so far it has lasted me without having to open any new tins (I have gotten away from Burley blends and smoke them maybe twice a month). My opinion of the Lane blend is that it is much like the previous "match" tobaccos by various blenders. I would have thought it to be a dead on exact production of ERR, but with time, it seems few things can be replicated perfectly. Not surprising really, I've had different "versions" of, for example, Sam Gawith FVF, depending on the year it was tinned, and there were a few years there where the recipe had, apparently, gotten messed up somehow .... as many were complaining. In the end, I think it comes down to more than just having a recipe for blending/curing/casing/etc. I think that, as people pass through their careers and other new folks are brought on board, there is the possibility that things change slightly. Who knows. What I do know is that many tobacco blends change over the years, and when a recipe is "brought back" or "rediscovered" the new blend/flake is not always the same product, for probably several reasons.