I am planning a ‘clean’ (no visible cables) ‘on wall’ installation of a large screen 1080p TV (Panasonic or Sony). The cable run will be almost 10m, and will include 2(or3) hdmi, 3 sets speaker cable, a set of component cables and a Co-Ax Aerial cable. (Power will be separate). I plan to place these all within a conduit to arrive from outside through a wall to the TV. Some concerns I have are as follows .................. 1)Will any of the signals interfere with each other? 2) Could I use an HDMI cable splitter/router box at the component end and route just one long HDMI cable to the TV? Already convinced of the benefit of quality HDMI cable, particularly for a long distance, the cost of two or three 9m/10m cables will be considerable. 3) Why are the HDMI connections on the Sony STR-DA1200ES, which is fairly new, limited to 1080i? I was going to route them all through this AV amp, but routing a 1080p output through it would be pointless, hence the individual cables. 4) I also think that having read some very detailed stuff about 1080i vs 1080p that most viewers will not be able to tell the difference, any comments? Thanks