Well, the problem is that we have 4 different types, with their own subcategories, and all of them have serious disadvantages.
This is why everyone was so geared up about SED. It seemed to be answer to everyones problems - perfect blacks, great whites, color and brightness... excellent viewing angles, super high contrast. However, its looking like it won't see the light of day.
When buying my tv, I was pretty disappointed there was no clear winner...
Nevertheless, I'm happy with my A3000.
I think the best way to go is to go into a store and
1) Compare black levels between the sets you want
2) Compare brightness
3) Compare whites
4) Compare color
5) Compare contrast between light and dark, and whether detail is maintained
6) Viewing angles
and last but not least
Now this is no trivial matter, if done properly. Truly comparing these factors are very difficult, and you will have to mess around in the menus quite a bit. Its also very hard to tell differences in a store setting. Side by side comparisons in a dim environment is the right way to do it, but is never going to happen.
Consider spending a few hours in a few stores and comparing nearby sets. Let your eyes be the judge, and not a spec sheet.