I have listened to both, I would go for the D & D for sheer practicality; they are relatively simple to set up & operate, very easy to place, very easy to get to sound good.
I agree that the Kii sounded like they offered more hi frequency detail, but they seemed to overload quickly (in a large, 45m2 room) and they were not easy to set up & fine-tune.
All of the above is empirical, of course, and I listened to large scale orchestral music on both sets, i.e. the Kii may perform loud & clear on less complex music.
They are both outstanding designs IMO, as as is the large Genelec.