I have never felt the same way about any E-6 slide I have looked at to this day. Make no mistake. Those are good. Real good. But they just do not have the same as presence as Kodachrome. Nothing does.
Seriously, I *swear* I did NOT read your post before *I* used the "P-word" in mine.
There's no other word for it. I use the term because, in the audio context, it conveys the same meaning; a good speaker, with a good tweeter, will supply sound that -- by itself, you would probably never even hear, period -- but, when *included* with the sound you *do* hear, it "takes you there" to the place where the music is happening. Without that "presence" you are listening to "sounds that are a copy of music" -- but *with* it, you're listening to THE music, period. Damn, I really miss the ability to hear into double-digit KCPS. Getting older... sucks.
Other-than-Kodachrome images can be good. Very good. Excellent, even.
But they're still *pictures*. They don't transport you to the scene -- they don't *immerse* you on a visceral level to the point that you literally *feel* "there" in the scene.
I dread the day when my ability to enjoy Kodachrome to its fullest is relegated to the same place my ability to enjoy *musical* presence now resides -- memories... the past.
I'm not a bigot. I use other emulsions -- and enjoy them. I even use d* -- in fact, I recently bought a DSLR (a Pentax K100D, factory refurb) -- I got it because 1) it will accept my pile of screw mount Takumars (and my K-mount lenses too, but mostly I have screw mount), 2) it has a decent (read "real," in-body, floating sensor) shake-reduction system, and, 3) it was pretty stinkin' cheap (NWIH would I have paid anything *close* to street price for it).
I'll be using it for stuff that needs quick results (i.e., stuff for websites, for which in most cases even a low-end P&S is severe overkill, etc.), and, I *plan* on using it as a "virtual Polaroid" for my Kodachrome work. I don't know that anyone has done that sort of thing before, but I *think* it ought to be something that can be done.
So, I am an "eclectic embracer" of "other-than-Kodachrome" but if I could only use *one* sensitized material, it'd be Kodachrome, no doubt about it.
It seems to me that Kodachrome's most vociferous detractors are those who don't *use* it -- "experts" on what they have not experienced, lecturing those who *do* use and enjoy the product.
PS: Looking at scanned copies of Kodachromes -- on a computer monitor -- is NOT tantamount to "looking at a Kodachrome" -- you simply *cannot* experience the "presence" by looking at an electronic display that shows a digitized *copy* of the real thing. It's like trying to taste a wax apple -- and then deciding that no one in his right mind would eat apples.