I'm surprised you say that the CKM70 makes the DDM's dynamic range seem constricted - if so then the CKM70 must be pretty special indeed. Too bad I couldn't get them on sale because they sold out. I've found that the DDM has an amazing dynamic range - when an orchestral piece calls for it, it will really pile on the impact.
It bugs me that the new DDM seems to have the same ridiculous design philosophy as the old one though. If they could make the DDM in the EX700 housing, it would be a lot more classy.