While it is good to understand different technologies, it is better to use your senses in judging a TV, or any product that aims to please your senses. A manufacturer can throw in all kinds of technobabble into their marketing speak, and even throw real technology into their products, but that doesn't make what they produce any good. Only your senses can tell you if a product is quality.
Unfortunately, there is a lot standing in your way when using just your senses. The vast majority of retailers do not have a good way for you to compare TV's. You usually cannot adjust them; you have to rely on the way they have them set up, which is normally just the settings the TV had when it was pulled out of the box. So barring a way of testing TV's that are adjusted so that they perform optimally, you need to rely on professional reviews, and from more than one source. Cnet is a starting point, but you should look at other reviews as well. The more detailed the reviews, especially reviews that show scientific test data, the better.