I have recently bought a pair of Speakers from an Italian Company. H.E.O.L.O. is their name. It seems that they introduced a new, or at least unknown to me, way of reproducing the high frequency in a kind of omni-directional spreading. There is a good explanation in their web site: www.heolospeakers.com.
I don't know if these speakers are known and distributed outside my country (Italy). From some feedback I received in other forum it seems not... but the sound perception I got is something really special. Very high definition of sound, clear location of instruments in the room, without having the feeling that the source of sound is a single-point as it happens in a conventional speaker. Something special is also the fact that when you move in front of them....no real changes in the acoustic scene happens! Very good is also the low-range extension, that almost eliminates the need of a sub-woofer (unless you are a "bass" fanatic!!).
I will post a picture of my setup soon. Quite excited indeed!