Here are a couple of links to consumer reports on significant black level degradation after 1000 hrs of use on panasonic plasmas..
Are Panasonic plasma TVs losing their dark black levels? | Crave - CNET
http://www.avsforum.com/avs-vb/showthread.php?t=1167339
Those looking to buy, please do go through these.. existing users can comment on their experience..
Are Panasonic plasma TVs losing their dark black levels? | Crave - CNET
http://www.avsforum.com/avs-vb/showthread.php?t=1167339
Those looking to buy, please do go through these.. existing users can comment on their experience..