BD luma, DVD chroma looks the most overall balanced to me. The only thing that it needs fixing is the contrast. It's not far off the DVD in terms of colour but without the side-effects and problems of ColourLikeRGB . I prefer the colour with ColourLikeRGB but it has too many problems with the picture for me to choose it over some of the others. I find the BD luma, DVD Chroma to have the least faults and would happily accept that if a tweak or two was made to the contrast.
We need more input from other people.