Brightness sets the black level... it has little affect over the overall brightness. Gamma, Contrast and the Backlight (on an LCD) has more control over the overall brightness. The actual Brightness control should be set properly with an appropriate test pattern, whereas the Backlight and (to lesser extents) Gamma and Contrast can be somewhat set to personal preference or based lighting conditions.
Your most recent settings for your 'eye ball calibration' are better than your previous ones. Generally you want to turn off any automatic or dynamic 'enhancement' crap. The Dynamic backlight probably helps a lot with the black levels though, so you might want to set that to preference. Generally the Warm color temperature presets are the closest to D65, but many people prefer a 'cooler' picture.
Is your room fairly bright or do you just like a really bright picture? I'd imagine that the Backlight at 100 and Contrast at 90 would be extremely bright for an LCD.
I have been using the TV with the new settings for a few hours and I've gotta say that it is working! For someone as fiddly as me, this is an achievement.
I have a hard time finding something that appeals to me because when something does I begin to compare it to other options and possibilities. It is in my nature, and I particularly don't like that about myself.
But just seeing the image quality right now, I feel like I am better off not changing it for my own good. It doesn't strain my eyes after hour using it, it looks gorgeous without the *radioactive* look of the TV -default Brightness too high for a LED-, the colouring is really nice, and I still keep the old values for comparison.
The previous preset looks also solid, but the image is subdued in comparison because of the very little contrast. Even so, it looked like one of those old cinema screensin some ways. It is kinda fun to see my first attempt at a somewhat decent calibration.
In regards to what you mention and Dynamic Backlight; the settings are Off, Standard, Best Power, Best Picture. The differences between them are minimal. Off looks brighter, but just very slightly, Standard looks slightly darker, so does Best Power, and then Best Picture. -I didn't choose Best Picture, it was like that by default and I had calibrated the TV with it enabled, with the expected results, so I didn't change it around.
Dynamic Contrast for instance, is an entirely different matter. It is better to set it to Off, because Minimum, Medium -both Minimum and Medium aren't bad- and Maximum -this one is the worst, it totally breaks all the contrast balance- just modify the video contrast and some of the rectangles in the colour bands test don't show up.
The image I get is very uniform, very consistent and solid. The coloured areas look beautiful, the darker parts of the image are discernable and the whitest too. I am really happy with the results.
In the future I gotta try AVS forums, but I can't be happier nowadays.
The amount of colour and stuff like that can be set based off your own preferences, but with that Brightness, Contrast, and Video Contrast settings the picture looks very clear, differentiated, and the different areas of the image are quite clear.
Additionally, it's not a "weird" TV, which is a boon. I mean, it is easy to calibrate -controls are a bit clumsy and slow though- without much hassle.
One of the best examples regarding how a well calibrated TV should look could be this image. I mean, the image itself is not about calibration, but it the TV has a natural good contrast, calibrating it would allow you to discern every single area of colour, whites, blacks, etc, like in the picture below.