You are not alone in your concerns
The best way that I can put it is that, IMO, the underlying technology doesn't really matter. There are some LCDs that are better than certain plasmas. And there are some plasmas that are better than certain LCDs. To me, it really all boils down to specific models. It is also a matter of certain strengths and weaknesses and matching those attributes to your specific viewing conditions. For example, if your room is well-lit or bright, I would suggest avoiding any display that has a glossy and/or reflective screen. It doesn't matter if it is LCD or plasma. There are some LCDs that have very glossy screens and there are some plasmas that have very glossy screens. Bottom line is that a glossy screen in a well-lit room equals a distracting and unsatisfactory viewing experience to my eyes.
Now, it so happens that the Pioneer Elite, Signature Elite and Pioneer KRP Monitor Kuro plasmas are basically the best in every way. They have unequaled black level performance. They have superb color accuracy. They have a very effective anti-reflective screen surface. They have excellent video processing. etc, etc. In every facet, the Pioneer Kuro displays are top notch, so if you simply want the best - regardless of the viewing conditions - track down a KRP Monitor, Signature Elite Monitor or Elite HDTV from Pioneer.
Panasonic's plasmas come very close to Pioneer Kuro performance. But they do not look as good in a well-lit or bright room. That is because the black levels on the Panasonic plasmas wash out a bit - black looks more grey. The Panasonic plasmas also have an anti-reflective screen surface, but it is not quite as good as the Pioneer version. Other than that, they are extremely similar.
So the top two brands happen to be plasma. But that does not extend to mean that ALL plasmas are better than ALL LCDs. At the moment, if you want the absolute best, get one of the remaining Pioneer Kuro. If you are ok with a very close second and your room is dim or dark, then a Panasonic plasma is the next best choice.
With either the Pioneer Kuro or the Panasonic plasma, burn-in simply is not an issue. Many people are still worried about burn-in - it was a big scare several years back and LCD manfacturers did a good job in "spreading the word" as a means to drive people towards LCD displays instead. But with the Pioneer and Panasonic plasmas, burn-in just doesn't happen except in extreme cases. It's basically the same as an old CRT. Both plasma and CRT use phosphors to create the light that you see. Strictly speaking, any phosphor-based display CAN burn-in if it is abused. But just like your old CRT, it takes something extreme - like leaving a bright white dot on the screen for 48 hours in a row. And even then, the Pioneer and Panasonic plasmas can often eliminate the burn-in using a special DVD that shows a sequence of solid colors or just using the "wipe" screen found in the menu. Bottom line - if you get a Pioneer or Panasonic plasma, do not worry about burn-in
If your room is well-lit or bright and you cannot afford one of the 60" Pioneer Kuro plasmas, I would recommend the Sony W5100 LCD. Sony uses a very effective matte screen surface that is excellent in a bright room and their 65" W5100 model is reasonably priced for such a large LCD screen size.
To sum up:
- Get a Pioneer 60" PRO-151FD, PRO-141FD or KRP-600M if you can afford one.
- if your room is dim or dark, the next best choice is a Panasonic plasma. The 65" TC-P65V10 offers more user controls and a 96 Hz mode for 1080p/24 content, but if you need a lower price, the TC-P65S1 gives up the 96Hz mode and the extra user controls, but a professional ISF calibration can make it look just as accurate as the V10
- if your room is well-lit or bright and you cannot afford one of the Pioneer Kuro plasmas, I recommend the Sony W5100 for its excellent matte screen surface and generally very good picture quality and reasonable price given the size.
Best of luck!