My green-blob-infected R60XBR1 was exchanged on 2006-08-13 (Sunday) for a new R60A2000. The delivery guys left just after noon PDT.
After many hours of tweaking (including the use of a THX configurator,) and also after considering the settings suggested by others in this thread, the CNET recommendations, and last but not least, the recommendations made by lovingdvd in his great review of the A2000
, here are the settings I have chosen in an attempt to reproduce the "3D," "depthy" and "filmlike, not-a-TV" look of my XBR1:
"Picture" Page (Custom Mode)
Advanced Iris: Auto 2 (use Auto 1 if the ambient light is especially bright)
Brightness: [range from 50 to 58, depending on ambient light]
....Bright ambient light: 58 [daytime, lots of bright lamps]
....Single dim light far off to the side: 50
....Good "general purpose" value (on my set, with my usual lighting conditions) is 56.
Color Temp: Warm 2 (with white balance adjustements)
Noise Reduction: Off [HDMI/Internal Tuner] or Auto [Component]
Advanced Settings (Custom Mode)
Black Corrector: Low
Live Color: Off
Detail Enhancer: Medium or Low
Edge Enhancer: Off
White Balance (same as CNET):
Color Matrix: Custom (using the default color mappings)
DRC: (86, 26)
Power Saving Mode: On
Settings not mentioned are set to factory defaults.
I find that my settings result in PQ for HD content on the A2000 that is superior overall to that of my XBR1 (which had issues other than just the Green Blob, and so may have had a worse PQ than other XBR1s, especially the later builds.)
Up til now, my practice when configuring TV picture settings has been to use a contrast (picture) setting closer to the middle of the set's range. The reason is that it always seemed to me that the higher settings for contrast caused black crush, and also caused some other form of distortion for which I have no name--it makes the picture look less natural, at least to me.
Thanks to lovingdvd's comments (see above,) I think I now know what the problem has been with setting contrast too high. Also thanks to him, I decided to try setting the A2000's contrast to some value in the 80-88 range. I finally settled on 84 (which just happens to be the same as the value recommended by CNET, by the way.) I have to say that that is the highest contrast setting that has ever worked for me. I hope that's a sign of the technological progress we're making in TV technology.