Full-array local dimming is the reason these TVs cost so much, and perform so well. Unlike most LED TVs (including Sony's 84-incher), which have their light-emitting diodes arrayed along two or four edges of the screen (making them "edge-lit"), a full-array model places them behind the LCD panel. In addition to improving screen uniformity, this arrangement allows small portions of the backlight to dim independently in different zones. Local dimming can, when done correctly, significantly improve black-level performance, a key picture-quality ingredient.
The Elite and HX929 did local dimming very well, but the Elite did it better, in part because it showed less blooming, or stray light in dark areas around onscreen objects. I suspect that's because it has more of those dimmable zones than the HX929. Sony doesn't divulge this number, but one report claims that the HX950 has 196 zones. I have no idea whether that's fewer or more than the HX929 has. As for the Elite, Sharp's reps didn't quote me an exact number but did allow that the 60-incher had more than 216 zones.
The sole picture-quality improvement Sony does tout is improved processing. Per the press release: "Sony's Super Bit Mapping technology incorporates 14 bit upscaling, processing, and pixel mapping to smooth gradation and improve the quality of low-tone pictures." The stand also tilts back and incorporates a sleek new circular design.
Otherwise the HX950 and HX929 seem quite similar. Both offer Sony's OptiContrast panel with Gorilla Glass, X-Reality Pro engine, Smart TV -- including the proprietary Sony Entertainment Network -- and 3D features.
If you've read all of the above and decided to buy this TV, Sony's list pricing might give you pause. The 55-inch XBR-55HX950 costs a cool $3,499, while the 65-inch XBR-65HX950 will run you $5,499. By way of comparison, the 55-inch HX929 can be had for $2,999 now -- it's a tough call whether there's $500 worth of picture quality difference between the two, at least until I can review the HX950. Unlike the HX929, the HX950 series will not offer a 46-inch size.
Spaces
Manufacturer Sony
Part Number XBR-65HX950
General
Product type LED-LCD
Diagonal size 65 in
Features
3D Yes
Instant internet streaming services Smart TV
TV features Corning Gorilla Glass panel
Video
LCD backlight technology LED Backlight technology
LED backlight type Full-array with local dimming
Resolution 1080p
Refresh rate 240 Hz
Sustainability
Greenpeace policy rating (Nov 2011) 3.6