Chipsets

[JimShaw]

Help on chipset understanding for Blu-ray players.

The Denon 2500 has the Panasonic Uniphier
Panasonic's top line uses the Panasonic Uniphier
The Denon 3800 and the Marantz 8002 has the same chip PLUS Realta

Denon told me the 3800 will give a better video quality then the 2500 which means to me the Realta must add to the quality and a better player.

The upcoming Sony will have the Sigma SMP8634 RevC.

Samsung the broadcom BCM7440 PLUS Reon.

So many players and alot of different chipsets.

My question is:

Is there a chipset in any of the top players that really adds more to the quality of the video than other chips OR if it does, is the quality so slight it can be only detected by a scope and not by human eyes watching a movie on their TV?