Denon DVD-5900 vs DVD-3910

Kr4, yes the 5910 is much more machine than the 3910. I traded the 3910 in on the 5910CI. The 5910CI was also capable of the 1080P, if I can only find the right TV now.
But I beleive the 5900 and 3910 are pretty much the same with a few improvements in audio.

If you don't mind I would like to know how the audio compared between the Denon 9000, 3910, 5900, and the 5910?
I heard the 5910 is like the 9000 in audio but which is better?

I believe the Denon DVD-5900 has a better transport, beefier power supply, and more solid/heavy build quality which improves damping and noise problems. All these improvements will yield better audio results over the less expensive DVD-3910. The DVD-5900 was once the flagship player from Denon (until the 5910 came out) so a lot of effort was put into this unit. The DVD-3910 is a lower model, although still good, I would still give the edge to the DVD-5900.

Good luck,
Harvey