Naim goes very with with Totem. I have heard the Naim Nait 5i-2 with Arro and Sffaf and really liked it. Should go with the DC also. Just checked, one on sale for just over $1K.
NAD could also be good. No experience with the Rega. IHMO, the Rotel can be a little forward and harsh, which may not mix as well with the DC.
NAD could also be good. No experience with the Rega. IHMO, the Rotel can be a little forward and harsh, which may not mix as well with the DC.