I haven't seen the specs on the particular ceramic midrange that is in the Kharmas (it's not Accuton, it's supposedly much better), but I can tell you that the Accuton ceramic drivers are not any faster than the Esotar mid. In fact, their moving mass is higher, and their motor strength much lower; also their surface area is larger. This translates to "slower and less dynamic", not "faster and more dynamic". Also, any metal diaphragm has break up modes that no crossover gets rid of (all tests bear this out, there's no getting around physics), where a soft dome mid has no HF resonant modes whatsoever, only one suspension (instead of two), and a smaller surface area (I'm only talking in the range above 700 Hz for these domes...OF COURSE you have to use a "cone" type driver if you are going down below 300 Hz, and these ceramics ARE like a cone despite their inverted dome shape, because they use both a front and rear suspension).