gbhsi1:
I rest my case...
If it was your case, which it isn't, you still couldn't rest it, none of that would stand up as evidence, it's unproven supposition. And the other guy isn't being rude about your hearing, once you get to about 20 you start losing the ability to hear the upper frequencies, so a tweeter that goes up to 100KHz (which no recording system gets anywhere near anyway) would appear to offer very little to the listener that at best might be able to hear about 20KHz.
Supporters say the benefit comes about by the replacement of the higher harmonics that would be present in a "live" situation but again if the recording doesn't reach the frequencies of those harmonics how is any speaker supposed to replace them?
Also, and no offence but I'd seriously question whether you do have an "open mind" on this subject, you already seem to have convinced yourself that this is a great product before you've even seen it, never mind heard it, you're taking the RA spiel at face value, which isn't exactly the of impassive approach you need to bring to auditioning hi-fi. I'd very much suggest that you're going to "hear" the "benefit" of these speakers regardless of whether they actually work or not.
Having said all that you are the only person who can judge whether it works for you, so if you can get some on a trial basis from RA then give it a go and see what you think, never mind what anyone else says.