I have to second the Nestorovic Type 4 speakers. Made by Mile Nestorovic who was the main design engineer, I beleive, when Macintosh tube amps were at their zenith.
He started his own company that some feel make the best tube amp, speakers and subwoofers in the business. They are rare and expensive. His subwoofer design is genius. The type 4 are his top of the line speakers. They are a pyramid shaped, time and phase aligned 3 way, with a leaf tweeter, 5 inch domed upper mid, and 8 inch lower mid. In a System 16 they are placed on a 20" stand with anonther pair of type 4 speakers placed on top in a head to head arraingement along with 2 subs. I was on the speaker merry go round at the time I heard these. Had a pair of Maggies that were the best of all I had tried so far including stats and many high end dynamics but I was still searching until I found these. Love at first listen and I knew my search was over (at least for now). These loudspeakers reproduce naturally what is in the music. All frequencies are very well reproduced and balanced.
Another impressive point is the diffusion. You will never believe that there are two columns of loudspeakers. It is a feeling that you are covered in all directions with music. It sounds as close to the real thing that I have heard.