5. D925-composite-LG (again, you can right-click/view for full size):
and
6. D925-s-video-LG:

With this recorder, there is virtually no difference between the results from the composite and s-video outputs. This recorder probably has a decent comb filter in it. It's also the image with the least noise and sharpest transitions. The frequency bursts still show the reflections onto the grey background, so this is probably due to the D925 itself - as is the very slight rainbowing at the top and bottom of the waveform that also appears on the other s-video images, if you look closely.
The main disadvantage is the weird interlaced chroma problem at the top and bottom of the colour bars. Might be due to a sub-sampling error in the MPEG-2 encoding/decoding.