Purchase an Extended Warranty?

I'm going to purchase a Panasonic VIERA TC-P50ST50 from Amazon.com.

Amazon offers a SquareTrade 4-Year TV Protection Plan for $128. This seems to have mixed reviews due to the limitations of the policy. For instance, the value of your tv is depreciated through the life of the plan should replacement be necessary. I never purchase them, but do you think it's worthwhile to buy an extended warranty with this tv?

Thanks for your response. As I mentioned in my post I never purchase extended warranties, but then again I don't spend $1K very often! And thanks for the feedback on the Panny. I was going back and forth between that and the Sammy UN46ES7100, and I decided to go with the plasma.

A lot of satisfied customers have left feedback for Squaretrade, but there are also many unsatisfied. For instance, one reviewer said:

The amount of your coverage is equal to the price you paid for the tv. Their contract has many qualifiers such as "in most cases" and "up to the purchase price." If they don't repair it or replace with a refurbished unit (and not necessarily manufacturer refurbished), they are only required to pay you the replacement value at the time of your claim. Four years down the road the "replacement" value of your now nearly obsolete TV will be a lot less. They can also "replace the Product with a new, rebuilt or refurbished product of equal or similar features and functionality."

Also you pay for a 4 yr. contract, but the first year of your contract includes the 1 yr. warranty from Panasonic, so it's really a 3 yr. contract. Customers have also complained about the difficulty in filing a claim, saying Squaretrade is slow to respond and gives you the runaround when you are able to get in touch with them.