I don´t think it´s fair to claim which one is the "true" flagship. The REF8 and 7 are both flagships of their own "line". If you ask Kingwa he´ll tell you the 7 is the highest range in his products, at least that´s what he told me. It´s most likely named after his "first love", the Marantz CD7 (my guess). My personal view is that in an all Audio-gd setup, then REF7 is the real flagship, but if you intend to pair it with another amp/transport, then the REF8. But judging from the comments I´ve seen here comparing the two, the difference really isn´t that big.
If I weren´t going to run a full Audio-gd rig, I´d get the REF8 instead though...
If I weren´t going to run a full Audio-gd rig, I´d get the REF8 instead though...