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I regret not having responded to your question sooner. I live in the Eastern United State time zone, so your question came in while I (and many others in the US) were sleeping. I hope that explains some of the delay in your getting a response.
I admit, I tend to estimate my ability and knowledge of Plasma TVs particularly low. I would like to Opt Out, since I have run out of really good suggestions, and open the case to any expert with Philips Plasma TV experience. (This does not involve any extra cost. Also if you'd like to continue with what advice I can offer, considering I am not fully Expert in my own opinion as far as specifically plasma-type TVs are concerned, I have not cut off communication and will still see and respond to any further queries from you.)
I apologize if you have found what advice you have been offered so far to be somewhat disappointing. We try to do our best here at JustAnswer.com.