I am in an interesting position to comment on this. I used to own a pair of Atria II with the momentum HD pre and M400 monos. I also had a pair of JL F110 v2 subs. This was an incredible sounding system. I decided to upgrade to a pair of Cygnus which I do not own anymore for reasons that I don’t want to discuss here.
I ended up with a pair of Estelon XB Diamond MKII. I also sold off my D’Agostino gear and moved over to a complete MSB system with the S202 and Premier Dac. I sold the Momentum gear to get some cash but also out of fear that it may fail in the future. I had a progression integrated blow a board while I had that in for a trial before I went with the momentum separates (I bought them used at a great price). The MSB combo is so close to the Dan gear at a fraction of the price that I can not see spending the extra. I would much prefer a MSB Reference Dac and S500 amp at a lower price and you have an incredible Dac.
As for the Atria at axpona with the Vinnie gear that was actually my old pair that I traded in. They were loaned out to Vinnie for the show. The Brama gear looks incredible but the V1 was lacking in many areas and was not close to D’Agostino. I have not heard the new V2 Brama gear but it seems strange to release a new version after only a little over one year.
I would look into MSB if you are considering the MxV Integrated.