Considering Vandersteen Treo

My profile is out of date, but my current speakers are QLN 3's, which I very much enjoy. The soundstage is wonderful, and they play nice in my smallish room at 12.5x11. However, they seem to lack some fullness, and not just in the bass category, I can't quite put my finger on what is missing. 

To date I have demo'ed Spendor D series, Wilson Sabrina, Audiovector R3 Arrete, Sonus Faber Olympica Nova II and the Vandersteen Treo. Each of them had their merits, but the Treo was the standout among these choices. 

Along with good sound, my requirements, and concerns, surround:

- How well they play in smaller rooms without overpowering the room.

- How well they play at lower listening levels, 65-75 dB. I am not a believer that this is entirely a function of speaker sensitivity. Some speakers 'wake up' at certain levels, and can be quite dull at low volume.

- Soundstage, and the ability to disappear. I like a broad soundstage and phase aligned speakers. All of the speakers did pretty well in this category, but the Treo's were better, presumable due to their phase aligned design.

- One concern and actually an annoyance with the Treo's is the speaker connections. I have significant investment in time and money finding speaker cables and I would not be able to use them on the antiquated screw terminal connections forced on owners of these speakers. Anyway...

Just tossing this out there to solicit opinions from those who have heard or own Treo's or QLN's. Let me know your thoughts.