ok, I owned C4's awhile back and thought they were pretty good. Dyn's do have a different take on high frequencies however. Most people hear a slightly shelved down aspect or less shimmer to the highs. It's subtle and system dependant in some respects, but all things being equal, Dyn's have a dryer less vibrant top end as opposed to a Totem for example. In any case they are still very musical speakers and can open up considerably after a lengthy breakin.