Here is the first volley! (lol)
You have many great points, but I think you are misinformed regarding LCDs, in that screen burn is no longer an issue. It was a definite issue in the early beginnings, but it isn't any longer.
Here is my first hand experience.
I do a lot of research before I purchase any Video or Audio equipment. I am an extreme Audio/Video junkie. Personally, I have owned a Fujitsu 4230 Plasma TV (resolutions 480p). Which was one of the first made. Original price at the time was 10,000 in 2000, but I purchased it used for 2500 which included a pop up cabinet with mechanical motor. It provided a stunning picture, but screen burn was prevalent and the blacks were pretty bad. This was actually a major problem for all plasma TVs I would say until 2004. So, that TV, I ended up giving away to a friend, because it had overheating issues, and I didn't want to pay the 1000 or more to fix it and I was moving to Reno from California anyways.
Then I purchased 3 - 27" Widescreen LCD TVs Olevia (480p,720p,1080i). At the time they were 1500 each, it was 2004, now the same TV costs about 500. I purchased these TVs, because they had so many connections, was PC compatible, and I wanted to use them as computer monitors, the really selling point for me, was that it was the best HD TV/Monitor I could find. I chose it over Samsung and Sony Models. As a PC Monitor it is great, but the maximum resolution is 1280x1024, native (which is what I use, cause its widescreen) is 1280x720. At the time, the largest LCD computer monitor you could find was a Samsung 20" Standard Screen 1920x1200. In my opinion, 27" monitor is the maximum you should go, above that, you have to actually turn your head alot to follow the action on the screen. Anyway, I have never had any screen burn issues with these TVs, but dead pixels did happen. Not in any annoying amount, but definitely 1 or 2 pixels became noticeably dead. I still use one 27" as my main computer monitors, one was given to a sister, and the other was stolen, and sadly enough, on the same day I bought it.
Anyhow, so in, January 2005, I purchased a Zenith/LG 50" plasma. I wanted another big screen to replace my old 42" and at the time, the 2400 I paid for the 50" seemed cheap compared to the price of 50" plasmas in 2003 (used to cost 10000-15000). I absolutely love this TV. It has a built in digital decoder so I don't even have to use the cable company's receiver. Screen burn is still apparent, but not nearly as bad as in 2000. When I bought this TV, I did not opt for the extended warranty, because I have grown up believing that if you do your research, then you shouldn't have a problem. This, unfortunately wasn't the case. Even after all my research, and after all the great reviews, this TV DIED! after just 14 months of ownership and it only had a 1 year warranty. The great news, though, is that it was sold with the Zenith logo, but it was an LG built item. SO, I was able to convince Zenith/LG to fix the TV for free. It would have cost me 600-2000 to fix this TV, and luckily for me, the company stood by its product. But, when it broke, I did more research to find, that my model seemed to be failing after 12-15 months of ownership. There were many occurences of this model dying, and unfortunately for others, not everyone was able to convince the company to stand by their product. Now I have my beloved TV back, and I bought an extended warranty from GE Capital for 500 for 5 years.
So, there you have it. That is my experience. My next purchases planned, though, will be a 42-50" LCD 1080P and a 24" Widescreen Monitor with mas resolution 1920x1200! I can't stop my addiction!