This arguement is based on opinion and when that is the case nobody can win.
That being said, let me give you my uhum expert opinion.
Most ISOM I have had have been excellent boarderline spectacular. Not all but most.
However many non ISOMs where just as good of memories to ME. Tell you the truth, I just traded a monte #2 and a Cohiba Siglo for some Padilla Obsidians. and That is a trade I would do every day of the week. To me nothing comes close to an obsidian. NO ISOM, no Opie X and no White Owls.
OK I am going to shut up and go get me another Obsidian for breakfast!