Q: "why do you think that the composite cables had lag, but the component didn't?"
A: Like I say in the summary post, perhaps it's because of the extra deinterlace step. Composite is always interlaced; component can be progressive; the display is inherently progressive.
Q: Is the sound popping limited to 42U sets?
A: Good question, I added a query about that to the summary post.
Q: "does the d43u line have the banding problems that plague the higher end sharp models?"
A: That's a loaded question. If you look for flaws, you will find them. The 92U/higher end guys are spending way more money than us and as a result are being very picky. I don't see banding on my set (even with the service grey screen) and I don't want anyone to point it out to me
I updated the post with a bit more weird videotape behavior, I'm sure I'm the only one who cares