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I think it is Samsung.
Samsung, for the most part. That doesn't mean they don't use circuit boards from other manufacturers for some of their sets. It's a matter of Economics.
The television manufacturers that make a 30 inch LCD are the following: LG, Samsung, Sony and many more. You can find all the different companies when you walk into a tech store.
Most TV sizes are even numbers, commonly found in 32 inches and 42 inches, but Samsung has 37 inch LED TVs available. This size is a bit of a compromise making it smaller than the 42 inch TV but also lighter and easier to manage. A big appeal of Samsung TVs is the display. When you buy Samsung you are buying a TV that is thinner lighter and easier to mount. The odd duck 37 inch size gives people an extra option on how and where to display their TV.
You can purchase a Samsung forty-two inch plasma High Definition television from Best Buy (sometimes purchasing an HDTV will get you a gift card), Walmart, Target, and even Amazon.
There are many manufacturers to look at. Other high end manufacturers are Panasonic and Sony, Both are well worth trying out.
Samsung, for the most part. That doesn't mean they don't use circuit boards from other manufacturers for some of their sets. It's a matter of economics.
There are a lot of models over 60". Samsung, Sony and LG are three of several manufacturers.
From elsewhere on the interwebs: "Basically, the suffix UZA or XZA doesn't mean any extra feature. This is just an identification mark from Samsung to identify the TVs manufactured by its two different parts manufacturers."
For most people one of the biggest home purchases to make would be a new LCD television. Since it is a big choice, all people would benefit by purchasing a Samsung LCD television. While Samsung has a reputation for developing the best LCD televisions, they tend to be a bit more expensive. While they can be more expensive, you can save a considerable amount of money on Samsung LCD televisions by purchasing a slightly older model. These models are normally a couple of years old, but have almost all of the same technological features and the TV can be purchased for just a fraction of the price of a new one.
I would do some research and price matching to find the best store for the best price.
Almost all major TV manufacturers sell 40 inch HDTV's these days. This list includes Sony, Samsung, Vizio, Panasonic, LG, and numerous other budget manufacturers.