Plasma TVA plasma TV screen consists of millions of multi-colored gas-filled cells. When electricity passes through the cells they light up and produce a picture. Plasma TV screens have a much higher resolution than tube TV screens. In fact, the picture is so clear it's almost like watching a scene through a window. It's truly amazing how clear the picture is. Screen sizes range from 42" to 80" wide and are 3" to 4" thick.LCD TVLCD (light crystal display) TV screens are made up of a thin layer of liquid crystals sandwiched between two glass plates. When an electricity is sent through the crystals an array of tiny multi-colored pixels light up to create a picture.LCD TV screens are thinner and lighter than plasma screens. They are the most popular screens for computers, and are quickly gaining popularity as THE TV screens. LCD TV screens are anywhere from 1/4" to 4" thick and 2" to 80" wide.Plasma vs. LCD FeaturesWhen it comes to which type of TV screen is sharper and shows more detail, plasma TVs have a slight edge over LCD TVs, though LCD TVs are catching up. Plasma TVs are also slightly better when it comes to viewing angle – that is, how far you can sit to one side of a TV screen before picture quality is affected.Screen life is the number of hours a TV provides before the picture begins to fade. Plasma TVs have a screen life of about 30,000 to 60,00 hours, depending on the make and model, while LCD TV's have a screen life of 60,000 hours or more. Plasma TVs are also subject to "burn in." This occurs when a TV displays a still image long enough for a ghost of that image to be burned into the screen. LCD TVs do not have this problem.Plasma vs LCD TV pricesWhen it comes to which type of TV gives you the most bang for the buck, it depends on what you're looking for.If you're looking for a large-screen TV - 42" or larger - plasma TVs are currently cheaper than than similar-sized LCD TVs. When I recently compared prices on 42" TVs, the cheapest plasma TV was $230, while the cheapest LCD TV was $250.When it comes to mid-size TVs, I couldn't find plasma TVs smaller than 42." The cheapest 32" LCD TV I found was $219, while the cheapest 27" LCD TV was $199.When looking to purchase a flat screen TV I always check prices, features and specifications on a shopping site like Amazon, Sears, or Best Buy. On these sites I can get an ideal of how much I'll have to pay for a flat screen TV, and more importantly, I can get reviews by people who actually own a particular model – the good, the bad, and the ugly. I usually throw out the highest and lowest review ratings, like they do in the Olympics, and read the middle rated reviews. That way I get a pretty good idea about a model's features and reliability, plus any problems it may have.Once I'm finished reading the reviews, I narrow my search down to a couple of models I might like to purchase, and head out to my nearest Best Buy, Sam's Club or Costco to see the model and try it out. Hands on is the only way to I know if I'm going to be happy with a particular model.Then, if the price is right, I'll buy it. If it isn't, I'll explain to the salesperson that I can get it cheaper online and will they give me the same price. This tactic never fails to get me the best price.