I have a VooDoo Vector Dragon and yes, it is a very good PC. It is a very close second to the VH audio AirSines in my experience. You do see some used VooDoo ICs occasionally on Used Cable.com, but you are right, you don't see them come up for sale here much. I think one has to assume VooDoo is selling cables, since they are staying in business, and since they don't come up for sale, its not a stretch to think that means they have happy customers.
Why are Voodoo Cables not seen on Audiogon used?
I've had the opportunity to audition and then buy several of their power cords and they are stellar. I'd guess their other cables are very good as well, yet the brand is rarely seen here used. I would suppose that might indicate a high degree of satisfaction? What do others think?