Unlike wine, bourbon does not continue aging once it is bottled. Even so, several SBers have noted changes in opened bottles of bourbon that have sat untouched for a while. And several of you have mentioned that you decant your bourbon. Question: Is the use of decanters a matter of presentation (in old movies, gentlemen always serve their booze from decanters) or do you find that decanting actually enhances the bourbon? Furthermore, is the effect is any way different from just leaving the opened bourbon in its original bottle?