Scanned through this as there is no way I would watch other people listening to music for 2.5 hrs.
Seems to me that they were all in agreement that the ATC's were fun, but the least accurate. D&D's great value. The Grimms despite costing 3x more were unanimously 'in a different league' to the others, and the most impressive by far.
I am particularly interested in this as I have owned a pair of the Grimms, and, like these gentleman, found them to be one of the best pair of speakers that I have ever heard.
However, I have very recently moved them on. Much to my wife's despair as she was a big fan of their relatively understated and compact appearance. I sold them just a couple of weeks ago.
They were originally ousted by a Linkwitz LX521 reference system. Back to back comparisons between these two systems were very interesting as they differed in sound presentation so very much. In the end I realised I was wasting my time because as soon as you became accustomed to one then the other initially sounded broken, regardless of which you were swapping to and from. So I just had to ask which I enjoyed, the accuracy of the Grimms, or the all enveloping sound of the Linkwitz. I realised that I preferred the Linkwitz sound much more.
However, I have since returned to good old big vented cabinets with big drivers for my main speakers. Before selling off the Grimms I pulled them back into the room to ensure I was not making a mistake that I may regret later. Satisfyingly the result was clear cut. For my taste, in my room, I much prefer my current setup.
The Grimms are amazing at what they do. If you want the most accurate honest full range speaker then they are up there with, if not the, very best.
Once confronted with, and lived with for some time, though then the holy grail of a completely accurate speaker may not be what you wanted all along. I for one, and I believe that I am in a strong majority here, found that I preferred a little bit of seasoning on my sound here and there.
Give me a sweet dark rum on the rocks over a glass of crystal clear ice water any day