Please don't take this the wrong way. I am sure in their day, they were both fine processors. But they do not have HDMI nor will they decode the latest Lossless formats - Dolby True HD and DTS Master. So I would say use the one that at least has 5.1 or 7.1 multi channel inputs so you can use the lossless decoders from a Blu-ray player - assuming you are using this as a source. You don't mention.
Since you are updating, you may want to consider a current processor with the latest decoders. They do sound spectacular and a single HDMI cables can replace 7 RCA interconnects. Hope this helps.
Since you are updating, you may want to consider a current processor with the latest decoders. They do sound spectacular and a single HDMI cables can replace 7 RCA interconnects. Hope this helps.