Thanks for posting this information, I've been using these settings with our 61" version of this model(HL-S6187W). They work great, although I've made a small tweak; I cranked up the Contrast to 60 as 30 was just a bit too dull for my taste.
Our DishNetwork DVR box and PS3 are both connected over HDMI and use those exact settings. Our 360 is connected over component and is very dark, so I've cranked the brightness to 55. Not sure if this is because I am using component, or just the 360 outputs darker.