NAD C 715 vs Marantz MCR 603

I have an NAD C 715 as a bedrooom unit, driving a pair of Paradigm Reference Studio 40's (Previously Studio 20's and Tannoy Mercury's). I 'm interested in the Marantz MCR 603 but have never heard it. It gets great reviews ; is there anyone out there who has direct listening experience with BOTH of these who is willing to render an opinion re. relative sound quality?