Projection, plasma or LCD ... or OLED? LCD TVs, including LED sets, are the best-selling type of flat-panel TV. Plasma TVs remain available for the time being, however, and are more appropriate for some buyers. Plasma TVs typically have deeper blacks than all but the best LED TVs, wider viewing angles where the picture can be seen without losing quality, and better uniformity so screens don't suffer from bright spots or color shifts.
On the other hand, LCD TVs do better under a wider range of viewing conditions (like well-lit rooms, in which plasma TVs can look washed out); are thinner and lighter; and are more energy efficient, sometimes by a considerable margin. LED TVs are also available in a wider range of sizes; the smallest currently available plasma sets start at about 40 inches.
While flat-panel LCD and plasma TVs are perfectly fine for those perfectly satisfied with "small-screen" entertainment (say up to 70 inches or so before prices start to skyrocket), if you want a jaw-dropping TV image of 90 inches or more at a price that's more palatable, a home theater projector could be a better choice. However, projectors lack some of the "niceties" of other TV-viewing options -- including things like a tuner or built-in-sound. You'll also want a projection screen for best results. Projectors produce their best image quality in a darker room.
OLED is an emerging technology, very different from LCD/LED sets or plasma TVs. They are brighter than LED sets, let alone plasma TVs; offer blacks that are extremely deep (deeper even than the best plasma TVs); have colors that are accurate and well saturated; have wide viewing angles; are very energy efficient; and the screens are incredibly thin. Up to now, OLED was really not a consumer product. High prices, technology bobbles, and limited availability were all issues faced by first generation sets. But while $3,000 is not cheap, LG's 55-inch 55EC9300 could be a game changer. We discuss it further in the section on OLED TVs.
What is unilateral pricing? Most top-tier consumer electronics companies have put in place unilateral pricing policies that set a limit on the lowest price that an authorized retailer can offer on certain products, including many TVs. To put teeth into those policies, companies have threatened to cut off the supply of products to retailers that deviate from that pricing. Lower prices can sometimes be found at non-authorized dealers, but many manufacturers will refuse to honor warranties or offer support of any kind for products purchased outside of their dealer networks. Some retailers will substitute their own warranties for the manufacturer's warranty, although the value of that warranty will obviously vary, and could become completely worthless if the retailer goes out of business. Shoppers will need to carefully weigh whether a lower price offered by a non-authorized dealer is worth that trade-off.