I agree that Vandersteens are good candidates. A lot harder to find would be Tyler Acoustics speakers; I heard the PD15 and thought they sounded pretty good.
Odyssey Audio makes a small floorstander called the Lorelei that sounds pretty good.
If you need a floorstander that can be placed close to the back wall, or even the corner, one of the more flexible speakers with decent, warm, sound is the Gradient Revolution.