A home audition may be warranted, since what they do right - they do very well. The dealer is willing to let me borrow them for a weekend, but ultimately I doubt they're the right ones for me. Tubes would definitely help, too.
It's just a personal preference but the openness, snap, and clarity in the upper end (which IS spectacular) is less important to me than what I feel is lacking - an occasional muddiness in the low-mids and a harshness around 3-4khz. My guess is the root of the "problem" (for me) is here - From the 6moons review:
"the 3kHz transition between the twin hyperbolic 4-inch Carbon-fiber mids in their 5-inch spherical steel enclosures and the central omni tweeter is accomplished mechanically."
This is unusual - allowing the natural limits of the drivers' frequency responses to act as a crossover. It's an effort to eliminate the distortion that a crossover could introduce. I'm no expert in driver technology, but this means that a signal all the way up to 25khz is being pumped into these 4" drivers. That is not the "normal" way of doing things and perhaps this method doesn't quite work for my ears.