I have a newer pair of Cirrus Black with the custom amorphous core RAAL and the 1st order crossover network. I have heard the old Joule Black at RMAF with the AT midrange and the New Joule White with the Accuton Midrange and the big sandwich cone woofer. I have heard the Nimbus white as well, and although the midrange is super detailed and resolving, I think I just like the sound of the AT drivers better. They are a little more subtle with their delivery, more organic sounding, not to say there is anything wrong with the delivery of the whites mid range just a little bit more dynamic than I prefer for everyday listening. For me the Joule Black, with RAAL and a full range accompaniment of AT drivers, with whatever special sauce Vapor adds to make it all sound so sweet together, that with a good front end...is nirvana.