We have the Gradient on display the Evidence.
The Graident is a very musical speaker howerver, it does not sound like a Magneplaner.
If you are looking for a set of speakers that will work in that room you should look at the Jantzsen ZA 2.1 which is a non diapole hybrid electrostatic. The sound is very open and they can work well in a small room they are adjustable for bass.
We would also recomend the Paradigm Persona 3F extremely holographic and detailed, fast like the Magneplaners, and they have good bass but will also work well in that size room.
We have them on display in a room nearly identical to yours. 18 by 14
Here is a picture of this sound room.Audio Doctor High End Audio Boutique - Photos
https://www.facebook.com/audiodoctor1/photos/a.122500301156525.22643.122499304489958/173841019956551...In order to better guide you we would need to know your matching equipment and taste in music and of course budget.
Dave and Troy
Audio Doctor NJ