There are Blu Ray players that can equal the sound of CD players. The Oppo players compete with CD players and I bet that that Marantz 7007 sounds as good. Cheap BRP's are another issue. BRP's like the analog Oppo and the Marantz were made for excellent audio and video.

With that being said, congrats on your choices. If you can swing it, you may want to take a look at the MM8077. It is probably a good step up in sound quality over the 7000 series

MARANTZ MM8077 7-channel Power Amplifier | Accessories4less