Try to audition electrostatics. In your range you should be able to score used Martin Logan's or Innersounds. Stat's are extremely clean, detailed, and image great depending on room setup . The lean sound that is sometimes pointed out as a problem with stats is tempered by tubes. I use Logans and tubes in a dedicated room just a little bigger than your dimensions and love the combination. With a dedicated room of your size you should at least try to hear it setup with ML Aerius.
Have fun.
Have fun.