Originally Posted by circumstances
are any of those specs superior to what is currently found in a 3800BDCI and might find their way into a later blu-ray offering from denon (mainly the DACS and Realta implementation, not interested in DVD-A, SACD, i.link, denon link, etc.)
Who knows what Denon plans for future high-end BD players. I doubt that they'll go back to doing things like using both DVDO and HQV solutions for different stages of video processing.
As for existing players, there are a couple of obvious internal hardware differences between the 3800 and 5910. One difference is that the 5910 forgoes the Realta for video scaling and uses a DVDO solution instead. This doesn't necessarily mean that the 5910's implementation is better. Another difference is that the 5910 uses superior audio DAC chips (Burr Brown 1792 for the 5910 and 1796 for the 3800). The actual DAC chip implementation seems to be the same, where the two-channel analog output gets special attention with two chips for a dual-differential configuration.
Aside from those obvious differences, all bets are off as to what Denon did differently with lesser known audio hardware. The 3800 could have been given a better or worse analog output stage than the 5910, but to figure that out would require someone to open up both players for analysis. For what it's worth, Denon's own SNR, THD, and dynamic range measurements for the two players are almost identical.