It probably has more to do with the player, in this case the one and only Carlos Nunez, than it does with the actual whistle....not to mention the concert hall and the sound techs at that performance. It is a nice sounding whistle of course but it is usually the player that gets the best out of it. Possibly a Jonothan Swayne?
I think Id agree... A bit more digging and the design looks awfully similar to the Swayne images Ive found. I just can't find a whistle who can match that offhand timbre. The BW seems to be closest from the recommendation of a dear friend.
I did just order up a set of Susato Kildare S whistles for fun, I might order a few others in the Kildare line when I can afford a few low pipes