I have not had the Perfectwave in my system, but I remember it from CES being absolutely stellar. In fact I walked out of the Vandersteen demo, and the PS Audio room was the next one I actually listened in, and it made a huge impression. That's a lot to say, especially since the Vandy demo was on a system that included the Clearaudio Reference turntable with the Goldfinger cartridge on it. About $120k just for the record playing set up.
I had the Berekeley for s short time (about a week) and bought the Bryston to compare. I kept the Bryston, and let the Berkeley go to another buddy (he paid for it), because I thought the Bryston was slightly warmer, which is what I was looking for. In fact, they were very similar, both excellent top and bottom ends, and I like the slight hint warmness from the Bryston.
I would like to hear the Perfectwave in my system....