Video quality of Blu-ray players you have owned

[bootman]

Originally Posted by TheRealBob

I don't even know if it's splitting hairs.

They're decoding a picture to the same values and sending it digitally over HDMI to your TV. If everything is set up the same, the exact same values are probably being transmitted to the TV, so the picture quality difference would be nil.

But many players have picture controls that can fine tune the picture to your particular set.
The new Denon even processes 1080p through their implementation of the top of the line silicon optix chipset to give their players a more "film like" quality.

So what you say may be scientifically possible, in practice it rarely happens thus leading to perceived picture quality difference among players.