Stephen, Rowland like many other designers, learns something new with each new product, and his devices have evolved. His older designs were warmer-sounding, and not quite as extended, resolving, and transparent as his newer ones. In particular, I remember Rowland commenting on Capri vs Coherence II... according to him, Capri outperforms Coherence II in resolution, transparence, and musicality, even though Coherence looks like a much more impressive device... At the time of Coherence, Rowland did not have available the high speed low noise parts that he used in Capri, and later in his Criterion and Corus devices.
Of course, older products have already that "nostalgia factor", that the newest stuff will eventually acquire a decade or so down the road *grins!*
Guido