Don't want to start the whole "native off or on" thing again. A tech was here and while I was double checking signal strengths and channels, I mentioned having "native" set to on to allow the tv to process the signal. He said, "Oh DTV says you should always have native set to off." I asked him if there was more to it than just the speed of channel changing (like possible effects on hardware) and he didn't really give any details. Maybe he was just repeating DTV recommendations. This was one of the more knowledgeable tech/installers that was here to fix a bad install. (Really great guy) So, just thought I' throw that out there to see if anyone's ever heard of other reasons than picture quality and speed.