I actually posted a related question in the integrated amp section of the forum, regarding the Marantz PM6004 integrated and the matching CD player. Currently looking for a local dealer that carries them, so that I can do some listening, in person.
"What Hi-Fi" gave them glowing reviews, but I don't always trust the organizational reviewers. The reviews mentioned here were way over-the-top, especially for entry-level components.
I have the Marantz CD5004 in my HT setup in the living room and am quite impressed with it. The way I understand it is that the 6000 series is a nice jump up in performance. If that is so it is certainly worth a listen. The Marantz sound is quite distinct and not one I'm sure I could live with in my main system. That said, I am very intrigued by this 6000 series and will remain open minded about it. Good looking stuff IMO. I'll post this where you asked about the CD player as well.