@toki - I haven't calibrated back-lit TVs in quite a while, but I'd probably go with normal 10% and dimming off. You could ask about your particular display in the
calibration section of the AVS forum. Ted will be happy to help you
@LordX2 - Best to stick with 8-bit + madVR's excellent dithering, but you could always put up some
gradient patterns to see what looks better.