Ive noticed on my 2600 when i turn the interlacer/deinterlacer feature on it turns on for all imputs including the hdmi imputs.
It makes my svid source look better and make both of my hdmi sources look worse. it makes some things look like you can see the interlacing.
Obviously i turned it off. I did note however on some DVD's, Specifically finding nemo looked better. I see that dvd 3 times a day every day because my son watches it constantly so i notice changes in it alot more.
All of the video options are the same. when you turn it on its turned on for everything.
i think it would make more sence for the digital imputs to have a seperate configuration from the analog imputs.
other than that this reciever is great.