The best speaker for a small room...at any price point.

KEF LS-50 with a SVS SB-1000 is excellent in a small room @ about $2K.   My room is about the same size as what OP proposed.  I compared to my Pioneer S2EX ($6K) and the KEF system is much much better at least in my small room.  I recently bought Tekton Impact Monitors so I could eliminate the subwoofer but they are not set up yet.  I was told by several people that have heard/owned both that the Tektons should be much better than the KEF system in my room.  

Do yourself a favor and try to listen to anything by Wilson Benesch in their Geometry Series!
http://wilson-benesch.com/geometry-series/

@perazzi28. I have always liked the Wilson Benesch speakers I have heard in the past. I will try and hear a smaller stand mount in their Geometry series, although they too seem to have few dealers here in Calif.

One other thought, and that is to acquire a pair of stacked Quads...the original versions. To my ears, these speakers are some of the purest transducers in the critical midrange of anything that I have ever heard...not sure if they would work in a small room...and if I can accept their limitations in the other areas of the frequency spectrum.
Anyhow, other thoughts on speakers for this size room is appreciated.

Davey, I had original Quads and moved to the new series, which give another octave top and bottom, but are no more musical. I modded two pairs of 2905's to improve clarity, and could not be happier. Larger, irregular room.

One of my friends has a triple of stacked original Quads, and they sound wonderful in a room of 9x18x29. In fact, the best room I have ever heard.