Denon DVD 3930 ci or DVD 5910ci Which one?

Most interested in redbook and SACD sound quality. Is there really a difference in these two players or will the 3930 give me the sound I would expect from a high quality stand alone cd player.


what is redbook where do you buy sacd
i just bought the 3930-
I think you can find reviews over at audioholics. I don't believe there was any major changes in the audio side between the 3910 and the 3930 -- video processing was improved. And I beleive the review of the 3910 said something like the player is so good, why would anyone spend more for the 5910.