I've enjoyed Virginia leaf improving with age on a number of occasions. It really evolves and improves, even when it started out very good. As a rule of thumb, I've always thought that Virginia ages and burley keeps well. Here lately, going back to my stash of D&R Two Timer, I find it seems to have mellowed and sweetened, and lost some of its fresh over-toasted taste. It was a good nutty two-burley twice-toasted blend to begin with, but now it seems to be better. I'm not proclaiming anything new based on this one experience, but as much as I love burley, single leaf, burley blends, and burley in blends with other tobaccos, I'd never noticed this beneficial aging effect with burley before. Maybe it's just my good imagination. Or maybe it's my long experience with burley rewarding my loyalty.