1, 2, and 3 look great, but the bitrate of Four is atrocious, it looks like a bad Youtube video, any motion results in horrible blocking artefacts.
It is really really bad, seems worse than sky even.
I am also noticing on text elements, that the de-interlacing seems bad, banners seem to jiggle up and down. It isn't the tv as the T-Box is outputting 720p, my old STB output 1080i and didn't seem to have the jiggling issues. This does not affect the OSD, so must be related to the de-interlacing of the video.