The DVI (or HDMI for that matter) connection will probably give you the best picture. With that said you will not be losing much switching your HD Sat box through the 3805. I have both HD Sat and progressive scan DVD switched through my 3805 and could not detect any degradation in the picture quality. I'm using two component inputs and one component output from my receiver. One caveat though, when watching a component source switched through the 3805 you will not see the basic OSD information like master volume. This only works with a non component source like s-video. You will still see the system OSD information but it blacks out the picture. This is similar to other receivers and not unique to Denon.