Hi. I have a specific question that I need the experts' advice. Here goes (long)... I have a low-end home theater setup that has been satisfactory for my needs: Toshiba 30" TV (8 years), Onkyo TX-SV545 a/v receiver (4-5 years), Bose AM-5 speakers augmented by the Bose center channel and surround speakers, Panasonic hi-fi VCR. Tapes played in surround mode and all was well...until we bought a Sony Playstation 2 for the holidays. It fit everyone's needs (kids for games, parents for DVDs). I even bought the Monster audio and video cables to get the best out of the unit. I found I couldn't use the audio cable (optical) because the receiver is only digital-ready (does Dolby Pro Logic) and needs an add-on decoder to process the signal. Onkyo made a decoder a few years ago, the ED-901, just for this purpose. I looked on eBay and found a few for sale. I started a dialog with the seller who said I couldn't take full advantage of the unit because my receiver does not have the computer multi-pin connection on the back to get the most out of the decoder. He also said that Onkyo made it to complement their higher-end Pro Logic receivers (like the TX-SV8XXX and 9XXX), not mine. Obviously money is an issue. I want to be loyal to the brand. My question is can I take advantage of this decoder (about $80 used), plugging the PS2 into it and then plugging the decoder into the RCA jacks of my receiver, and will I be happy with the sound? Or should I bite the bullet and look for an Onkyo digital a/v receiver (like the TX-DS6XXX and 7XXX, starting at $600+)? Thanks. Any advice would be greatly appreciated. I'll post a URL of one of the units for sale on eBay for your review.