Best from RSP means I adjusted Curves within RSP to suit my taste.

Best from PSCS means I increased Red and Blu in the shadows by +5 and increased RGB contrast slightly (all done via Curves).

I used a polarizer and I remember the extinction was quite high - the "yellows" and "reds" literally jumped out at me (at extinction) when I was looking in the viewfinder. The EOSpix Beta3 rendering is quite accurate on this scene.