The CDM-7NT and CDM-9NT are a lot better that the CDM-7SE, which (the CDM-7SE) in my opinion is great for HT, and sucks royally for music. Back in the days of the original CDM-7 and CDM-7SE the speakers to get for music were the P5 which is equivalent to the CDM-7 and the P6 which would have been like the CDM-9 (if there had been one).
I still have a pair of P5s which I preferred for classical over the Matrix 804. I demo'd them both side by side in my home at the time. I have thought about getting a pair of Nautilus 804, but wonder the same thing. How much better than the P5 to justify spending $3500. The P5 listed for $1500; I bought mine brand new when they were discontinued for only $1000. They were a steal for $1500. The P5 was never popular in the US. I see used pairs for only $600 which is the bargain of the century.
Has anyone checked out the new CM-4 which have very classic looks.