FWIW, when Audphile1 came over, I had less than 15 hours on the speakers, but the difference from right out of the box til tonight was already apparent. Right out of the box, the bass was virtually non-existant, but as Audphile1 notes, tonight the bass performance is pretty extended. There's definitely room for the rough edges in the bass and high frequencies to smooth out. Also, I was very surprised at how big a soundstage these speaker throw.
I still have a lot to learn about these speakers in terms of placement and how they interact with my room...tonight, we changed the toe-in by 5-6 degrees, and we noted a significant improvement in soundstage depth and even some tonal balance. I'll play with that more after I get 75-100 hours on them. As noted by Audphile1, at $3700, they are quite good even now...if they smooth out the way I anticipate they will, I will regard them as a pretty serious bargain at their price...