Look on pages 16 & 17 to see a discussion of your multichannel analog inputs. On the page you mention, they are in the grey area just to the right of where the video connectionss in the illustration are located.
From what you have said about your needs, I would not spend the extra on an Oppo, and would go with a Panasonic, either with a low end unit (if I were going to replace the receiver) or with one with multichannel analog outputs which will cost slightly more.
Unless you have a laserdisc player and are using the AC-3 input, before I spent a fortune on a BD player, I would replace the receiver and then buy a low end Panasonic BD player in your case. The setup would be easier if you did that, because if you use the multichannel analog inputs, you will be needing to do the channel balancing and such with the player's options. This also means that whenever you change your furniture or speakers or anything that affects these matters, you will need to deal with balancing and such with both the player for the multichannel analog input, and also with the receiver for all of the other inputs. And unless you have an SPL meter and are good at using it, you will not get these things as accurate as you could with a modern receiver that has built-in automatic setup (where one plugs a microphone into the receiver, pushes a few buttons, and it then plays test tones for itself and adjusts the channel balance and delays automatically while you go make yourself a cup of coffee; it will be finished long before your coffee is ready).
For most people, the automatic setup is a feature well worth getting, as that way they get the channel balance and delays properly set, which can significantly affect the sound. But if you are using the AC-3 input for a laserdisc player, then you will have trouble finding that type of input in a modern receiver, so such a need might get me to keep your old receiver, if that is actually being used. Of course, if you are not using it, then that feature is completely irrelevant.
