$20k top, full range speakers?


Hello,
I have been searching and searching for a new or used pair of full range speakers in the $15k-$20k range.
I would like speakers that are enjoyable at low volume as well as high volume. I owned two full range so far both
Not great at low volume, making me always wanting back those kef 104ab...
I have been thinking about:
Sonus faber Amati anniversario
Rockport
Usher be20 (the weight and looks are a bit of concerns)
Opera Tebaldi

The room is 28'x24 L with openings and not austicslly treated as it is a living room.
I would appreciate any inputs.
Thank you
baam23f
Well, I am reading/looking about the so many great suggestions I am getting from this post. for that i thank you one more time.
Still, I found another speaker that aesthetically is not my type, but certainly from what I read it is quite interesting, it reminds me one of my first speakers I was looking into (Opera Tebaldi), which is the Genesis G5.3 with its dipolar configuration.
I cant find much of user's opinion about these. Anyone here ever heard them?
I read their web site pages but i cant find any statement whether it is a sealed or ported design, i must have missed it.
Acoustic Zen Crescendos, haven't heard anything better in their price range yet.
I had the Genesis 5.3's before the Kef 207/2's: the Kefs are much better, in my opinion.
In this price range, I believe the Legacy Whisper XD deserve consideration as well.