Silverline before and after Dynaudio drivers

I've got Silverline Sonatina II's and am curious for feedback from people who have spent time with Silverline's BOTH before and after their switch to Dynaudio drivers (e.g. Sonatina I, II, or Sonata I, II are pre-Dynaudio, versus version III of these uses Dynaudio. Also the 17 series I believe use Dynaudio.

Also I'm particularly interested in comparisons among the various versions of the 17 series.

Thank you.
Art