I own a decant of C42B11X02 and a 4oz bottle of S42B12A01 and to be quite honest, the only difference between the two to me is that the 2011 batch is a tad bit stronger as far as projection. Both smell identical and the 2012 batch still brought on just as many compliments as the 2011 does. I wouldn't take this whole batch thing too literally. I just can't speak for the 2010 batches which are rumored to be the more smokey ones. If you get a 2011 or 2012 bottle, you will be happy.