Originally Posted by PortiaN
....Do you plug into the analog tuner part so that when you are watching SD programming that it looks better there?
If I understand the question correctly, the answer is you don't plug into the tuners separately. Your source determines whether the channel is analog or digital, and almost all SD programming on my Comcast service is digital. Digital does not mean HD.
So to answer your question, SD picture quality depends on several things including the original source quality and the compression. Some SD channels on my service are noticeably worse than others, but some are actually very clear and sharp.
Also remember that some of the local HD channels actually are displaying SD content - they're only transmitted on the HD channel but the content is SD and it does not look any better than watching the same non-HD channel (i.e. CBS Evening News). You'll see the black bars on both sides of the picture when this is is the case since SD content is formatted as 4:3 and then packaged onto HD's 16:9 screen size.
I've had my 195 for a year and can say that I've very satisfied with SD in general, but you also have to be sure you're not sitting closer than reasonable for the size of the screen. SD picture quality is really what determines the size of the screen based on how big your room is. I sit about 15 ft away from my 62" screen, and sometimes think that the 56 would have been enough. But HD is amazing.
Also, my understanding is the satellite service uses higher compression than cable so the negative impact on picture quality is greater.
Just some things to consider.