QUOTE=rekced;557987]Not sure if you would care about this kind of stuff, but.....
Panasonic TH-58PZ800U (58'' Plasma)
196 watts average
0.14 watts per square inch
$60.78 cost to run annually based on 8 hours of running time per day
Sony KDL-46W4100 (46'' LCD)
269 watts average
0.30 watts per square inch
$83.36 cost to run annually based on 8 hours of running time per day
More info here
http://reviews.cnet.com/tv-power-consumption/
The bottom line is that technology changes, not all electronic parts are equal, nor do they all have the same inherent characteristics. Finding a TV that is cool and energy efficient is not as simple as choosing LCD or plasma.
Btw - Your 52'' TV is probably LCD. Now I've seen it all. Not only do people knock new plasmas with old plasma horror stories, they even use stories of hot LCDs against them. Plasma has no chance![/QUOTE]
Make sure you post the after calibration results too:
Panasonic TH-58PZ800U Picture settings
Default Calibrated Power Save
Picture on (watts) 196.37 363.45
Picture on (watts/sq. inch) 0.14 0.25
Standby (watts) 0 0
Cost per year $60.78
$112.50
http://reviews.cnet.com/flat-panel-tvs/panasonic-viera-th-58pz800u/4505-6482_7-33234548.html
Sony KDL-46W410 Picture settings
Default Calibrated Power Save
Picture on (watts) 274.43 140 96.4
Picture on (watts/sq. inch) 0.3 0.15 0.11
Standby (watts) 0.85 0.85 0.85
Cost per year $85.47
$43.86 $30.36
http://reviews.cnet.com/flat-panel-tvs/sony-kdl-46w4100/4505-6482_7-32815337.html
Both sets of specs were pulled directly from CNET and can be verified at the links I posted below each set of specs from CNET's Juicebox stats.
Both reviews were done by David Katzmaier. The Panasonic on 10/3/2008, the Sony on 6/4/2008.