I’ve been doing a little research in this area and I like that costco doubles the warranty and has the concierge service. My sister just told me about having to use the concierge service from costco, they pretty much act like your lawyer when dealing with a warranty issue, making sure you are happy and not having to make tons of calls. I’ve also found that the tv’s in the ads at many stores or online are the 60hz models or do not look very sharp when you see them in person.
One thing to look for is energy use, some models can use 2x to 4x the elecrictiy of others, some of the older big plasmas gobble up air conditioning amounts of juice.
The lowest energy use ones appear to be LED, but they are new and expensive at the moment, in two years, it’s likely plasma and lcd will be extinct, the LED’s look better and use less energy, significantly less.