There are many speakers that can conjure images that are independent of themselves. There are both box and boxless designs that can do this very well in my experience. Certainly Quad, Martin-Logan and SoundLab electrostatics are proficient at this, as are the Magnepan and Eminent Technology planar magnetics. These designs seem to benefit from their boxlessness and their dipolar radiation pattern that cancels certain interactions with the room. However, these designs can sometimes produce images that appear less "solid". This kind of transparency of image can be distracting to some people, highly attractive to others. Omnidirectional speakers like the Ohm and MBL designs are fabulous at imaging, perhaps peerless. These are images that you can literally walk around due to the way in which the speakers propagate sound. The omnidirectional radiation pattern also allows you to enjoy extremely solid and convincing images from nearly any position in the room. I've heard very carefully designed box speakers from Totem, Von Schweikert, Kharma, Wilson, Avalon, Thiel, Vandersteen, and Aerial image as convincingly and independently from themselves. However, their power to image this well is more or less confined to a few positions in the room.
