Great input on this thread guys Thanks. Here is my one problem by leaving it on 1080i and having Native off-It is easy to unknowingly switch the format (or someone in your home switch the format not knowing what they are doing by pressing the format button) and not knowing it is in another format really until you notice, therefore Im not really viewing in HD anymore (480i/p). It has happened to me a few times when not having it in Native. When it is in native pressing the format button does nothing (it's locked, unless held for 3 seconds or so). 1080i with SD looks less vibrant and less colorful IMO. But the time it takes to switch between formats is the one ther annoying thing about native. I guess that is 2 to 1 in favor of having it in native IMO.