Great work, Pringals!
I've only calibrated with THX Optimizer and the SD Video Essentials so far. The THX Optimizer is from the BD version of Terminator 2. This is the only BD that I know of with THX Optimizer on it.
This is my fifth projector, but the first one where I've ended up with a higher number on my contrast setting than my brightness. I think with Natural mode I ended up with 4 on contrast and -1 on brightness. My theater has a black ceiling, dark purple walls and dark carpet with dark curtains around the screen. Letterbox bars are really black with the 8100 in this environment. I use it with the iris on. I've left superwhite off. It appears to dull the whites too much. As long as you're not cranking your contrast up too high I wouldn't think it would be necessary to use Superwhite, unless I'm misunderstanding its purpose.
For those with upconverting DVD players, how much of an advantage are you seeing? I'm using a PS3 and honestly I can't see a difference after calibration. The scaler in the 8100 is very good apparently. I'm using standard power for all settings except one, where I tweaked Living Room mode for movies and put it in ECO. It's still very bright on my 126" screen.
Also, I mainly use Living Room color mode in standard for sports. This is amazing for NFL games. Dynamic actually is too bright with the lights off.