Re: tobacco leaf???
Oh, we need to keep in mind that with a single species of tobacco a significant extent of variance exists in terms of taste depending on where it's grown and agricultural methods used which results in a wide range of quality "grades" so it would be a mistake to view all Latikia, Virginia, Smyrna etc as equal.
Also, a wide range of curing and fermentation methods exist which effect the flavour of tobacco dramatically. Further more, the cut of the tobacco effects burn and packing characteristics great as does the amount of stems. Stems have far more nicotine then the rest of the leaf (and roots more then either) while lacking the compounds that give natural tobacco flavour. For a smoother smooth with less nicotine carefully get rid of all the stems.