These stores use Sodium lamps to like the stores and I don't know any home owner who uses such lamps in their homes.
I have tried to compare LCD vs plasma in stores and even stores that have dimmer lights and it maybe those sodium lamps in the store that hide the poorer viewing angles and black levels on the LCDs, but in a home the same LCD display becomes much more noticeable. I can NEVER see these issues any where near as much in the store, but once home they are there. This is after calibrating the displays as well.
I purposely tied to see the issues that my first LCD had in my home with the second LCD I bought in the store but I just couldn't see more than slight traces, but when I got it home I could see them in that new one. Now that I have the plasma in the same lighting the difference in black levels and viewing angles is startling.
Many people will not have the two technologies in their home to compare like I do so they will not see this if they buy an LCD so it can be a case of what you don't know won't hurt you, but I wanted to relay my experience with HOME LIGHTING which is completely different than the store lighting and that changes how this displays look. Plasma improves in home lighting for me, and LCDs look worse in home lighting. I suspect that is part of the reason LCDs have become so popular because of how they look in store lighting over home lighting.
