Digital BW, The Print

I, too, just received my piezo tone samples on PR from Inkjet Mall.  I must say they are very impressive, much better than the original Piezo ink samples they sent last year.
As others have asked, Does anyone know what printer / rip combo produced these samples. And if you're listening Digital Dog, how do these new Piezo tone samples compare with the ultrachromes and IP5.
David Aschkenas