I have a Pioneer 50 inch plasma (last years model the one with the media center) I run HDMI cable from the cable box to the media center. I run a second Hdmi cable from my Oppo Dvd player to the media center. Am hooking up surround sound using Denon Avr 2807. The media center only has two HDMI outlets so I can either hook the Denon to the media center using an optical cord or using a HDMI splitter to make one outlet into two. Anyone know which is better?