| Mr S
Plasmas do have a limited life which I can confirm, The mob I work for use hundreds of them and we have had some 42" models "wear" out after 8 months continual use.
The only real issue is if you intend to change from a plasma monotor to an LCD type and your using composit video, then an LCD is crap.
At the end of the day the mob I work for spend well in excess of a million pounds a year on TV`s/monitors and the way forward is LCD not plasma.
But you pay your money etc etc etc. | 
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