Everybody,
Well, although I'm not yet in a position to really offer a detailed impression of the 100s, I can definitely say that they sound great and that I'm enjoying the process of getting them set up. I'm finding that although they are not, "hard to place," they are, at least in my room, sensitive to placement. Moving them a few inches either way, closer to or farther from the rear wall, produces marked differences in soundstage and tonal balance. I'm still working with them and imagine that I will continue to do so for quite some time.
To my surprise, my pleasant surprise, their bass feels solid and controlled while not being boomy or overwhelming, even in my relatively small room. Highs are sweet and extended without being harsh, although that sense of brightness does seem to be somewhat dependent upon positioning -- I guess it has to do with how directly you are in the line of fire of the super tweeters.
Do they sound different than the Micros? Yes, indeed. My initial impression is that there is more inner detail, and that, as our friend, Mapman likes to say, "more meat on the bones."
By the way, as far as I can tell, my 80 W per channel integrated amp provides more than enough juice to make these go plenty loud. In fact, at least in my room, I can't really stand playing them much louder than about one third of the volume dial. :-)
More to come as I gain some more solid impressions...