Given your preferences and room I think the Silverline Sonatas would be a very good choice. Large 3D soundstage, dynamic, transparent, deep and tuneful bass(but not overbearing), and nicely detailed without brightness(silk dome tweet). They also disappear in a room sonically better than most speakers I've heard. If the Sonatas are too big the smaller Sonatina will get you most of the way there.
If you can find them used you might also consider the LaFolia, which is the next model up and is really quite something. Best of luck.
Tim
If you can find them used you might also consider the LaFolia, which is the next model up and is really quite something. Best of luck.
Tim