All I know is that the Commie bastards that distribute Cuban cigars call their company and their cigars Habanos (with an "O"). It's a good name, sounds right. I dunno from Habanas (with an "A"), I guess that would be a girl cigar.
ISOM is a stupid name and it pisses me off every time I hear it -- just one of many of my neurosises (sorry, I can't spell "neuroses").