One of the best DAC's I have had was the MHDT Labs Havana, and it was not expensive at all, under $700. I tried a bunch of DAC's in the $1000 - 3000 range, and the Berkeley too and I ended up buying a Bryston. I couldn't be happier, it's a great DAC.
I heard the PS Audio at CES and it sounded great, but I have not heard it in a real world system which is key. I would like to hear it. Actually I just wish someone would start a string about it, I would love to know what it sounds like.
I don't like the look of it though. It looks like my Akai stereo reciever from the '80s.