I've heard the Borreson Z2s briefly, being driven by a ARC Ref6SE and Boulder power amp being fed by the cheapest Aurender streamer (N200?). And it IMO sounded very good with pin point imaging and wide soundstaging. The dealer demoing them was not too impressed by the finish of the cabinets which were easily marred with finger prints.
I also think the AGD website is woeful - very difficult to navigate and find out about their products. They should fire their webpage developer.