SET and horns. Everything else sounds like music from a box to my ear. Just heard Avantgarde's the other day, and I swear it sounded like a live concert, especially on a CD of a gospel choir. I've heard planars, electrostatics, and ultra-high end paper cone speakers, and while many sound fantastic, I can always corral the music in my mind. I can pinpoint it as a definable, palpable body. With the horns, however, the analysis disappears, and I am simply overtaken by the natural presence of the music.