I want to improve my cd playback but i am unsure on what to buy.The Marantz cd6000 ki sig seems like a good player as does the cheaper cd6000.Will this be any better than using my DVD player ? Is it worth spending the extra and getting say cd17mkII? I use the analog out on the dvd player as i prefer the dac of the Sony. System:- Sony NS900v DVD Player Marantz sr6200 AV AMP GOLD Mission 773e Mission 77ds Mission m5c Monster mkII 400 interconnect Monster optical cable QED silver biwire front and centre ,normal for rears. Budget is £400 or i might stretch to the CD17.