EVEN BETTER THAN BEFORE
These provide about 3300:1 contrast ratio on my set and give Power Function gamma 2.22 and 105 cd/m^2 (HCFR claims 4876:1 CR, gamma 2.25).
If you are willing to not care quite as much about 90-100% gamma curve (which isn't perfect anyway) you could sacrifce a trace of realism for closer to a 4000:1 CR by boosting contrast to 98. That would also very slightly toss off WB and the rest of the gamma curve as well but probably not by too horrifically much.
I have a feeling I could still tweak the very top end a touch to get a bit more CR.
This profile is less twisted.
It doesn't bend magenta saturation as much and it also lets red at 100% get much closer to the full sRGB saturation spec and has even more refined gamma.
I found that even though Calman defaults to testing the gamut at 75% for the way the color engine works in the C650 it is better to test it at 100%.
Black Tone: Off
Dynamic Contrast: Off
Shadow Detail: 0 (I swear I don't notice any change, but perhaps I should measure and see what happens)
triads are all (R,G,B) below
Color Space: Custom
10pt WB and Gamma (this control is used to straighten out the kinks on the gamma curve every bit as much as it is to fine tune white balance) control:
Flesh Tone: 0
Edge Enhancement: Off (unless maybe watching under composite,component)
MPEG DNR: Off
HDMI Black Level: Normal if you send it black=0-255=white material (most PC usage, but sometimes other things if they are set this way) and Low if you send it balck=16-235=white material (most set top boxes and stand alone players)
AMP: Off (although you certainly fiddle with it)
This was calibrated to a Power Function gamma curve of 2.22.
Yeah.... these look really good.