Marantz SA 8005 and ND 8006 questions?

Hi  I have owned the Marantz  SA 8004 and the SA 8005 at different times.  Not sure one is really better then the other.  I then tried some other things and now have picked up a ND 8006  Problem is I have a different amp and ICs so no base line an anymore.  Has anyone had any experience comparing the SA 8005 to the ND 8006  My purpose is just Redbook CD playback  Do not have more then 2 SACDs and not really a streamer,yet.  Just wondering about regular CD playback  I know the DAC is different but  am I better off with one or the other?  thanks