I too am very interested in these D10s and D20s myself. Ty is a great person to deal with though I have yet to own any of his speakers I have followed his products and read many great things about his products for the last 10 or so years.
Here is a link to his listing on here for the D20s
http://www.audiogon.com/cgi-bin/cls.pl?spkrfull&1268239727&/Tyler-Acoustics-new-decade-D20
Here is a link to his listing on here for the D20s
http://www.audiogon.com/cgi-bin/cls.pl?spkrfull&1268239727&/Tyler-Acoustics-new-decade-D20