I sold my Dynaudio Contour 5.4's, and built a custom pair of Tannoy HPD 315's (12" Dual Concentric). I intended to see how the 12" DC would sound if maxxed out with the best possible enclosure and crossovers. The project was successful, they smoke the Dynaudio's, and most every other loudspeaker I've yet heard. I have never heard the best of the Dynaudio line, the Temptation Masters, but my $4500 investment in the Tannoys would hold up quite well in a shootout with the Dyn $80-100K speakers, I think. It would be interesting to try, if it could be arranged.
Enjoy,
Dan