Acoustic Zen Crescendo

I'm pretty interested in these transmission-line, full-range speakers. Has anyone spent serious time with them? How do they compare to other contenders around $16K?

Unfortunately, I'd have to fly to SoCal for an audition, so I'd like to vet them as thoroughly as possible before committing the time and expense. Press has been very positive but also very limited, and user impressions are scarce on the web.

Thanks in advance,

Bill