I used the THX cinema mode for some reasons. Thinking image processing should be as low as possible, but as much as needed for good PQ.
Light output of ~100 nits is enough for me, as I only watch in a dark room.
RGB level and gamma was quite good before calibration, so no big corrections needs to be done
by the Radiance (also got a mini 3D). Gamut actually was very good so I skipped the color cube and only do 21pt. greyscale calibration.
For sure I also run the cube and compared the image, as I didn't see a difference in color I decided to use greyscale calibration only as the gamma was better.