Aitchnu: From reviewing the forums it appears that more “serene” brands include Green Mountain, Spendor, Sonus Faber and Vienna Acoustics.
Just my take: GMA look ugly, SF's are usually overpriced. I have owned Spendor for years but must say that now a days Harbeth is a better choice for that kind of sound. Other than that you should put Silverline, Salk, Tyler, Acoustic Zen Adagio, and Zu on your list.
Sorry I can't narrow any further for you. :) Good luck.