Caspermao, I heard the MF A5 with Gallos and big, chocolaty Paradigms at my local dealership, and the sound was grainy in the extreme, so I don't think it's the DeVores.
Actually, I was susprised to hear someone say that the DeVores didn't match well with Naim gear, as I've been hearing the opposite. Besides, the un-named dealership in Seattle is widely held to be one of the more conscientious in the country when it comes to getting things matched right, and apparently they went out of their way to match the DeVores with the Naim stuff (all of this is second-hand info, I've never been there myself).